Audi A4 (2008 – 2015) Review
Audi A4 (2008 – 2015) At A Glance
High quality interior with plenty of space. Excellent steering and handling. Available with quattro four-wheel drive. Frugal 2.0 TDI. Improved for 2012 with more efficient engines.
Doesn't handle quite as well as a BMW 3 Series.
The Audi A4 of 2008 marked a significant improvement in the weight distribution of the drivetrain of front wheel drive Audi models.
Just as Porsche developed increasingly sophisticated solutions to overcome the fundamental imbalance of an engine overhanging the back wheels, Audi has had to do the same job at the front.
Worst of all were the old iron block five-cylinder Audi 100 diesels that much preferred to go straight on at corners than actually change direction.
Fortunately, for most of us, these are no more than a memory. Audi has continually been getting better at dealing with its disability and had all but disguised the ponderous pendulum effect of its overhanging engines in the final incarnations of the 2005-2008 A4.
But its big breakthrough came in 2007 with the A5. The engine still sits out in front of the front wheels longitudinally, but, by moving final drive further forward, the weight of engine and transmission is better distributed between the front wheels.
How they do this is to take drive from the back of the gearbox, then run a propshaft forward to a differential that sits on the right hand side of the flywheel, with the left driveshaft running between the engine and the flywheel.
The 2008 A4 shares this new drivetrain, as well as a longer wheelbase than past Audis and much improved front suspension, now 5 link in aluminium, with a steering rack repositioned in front of the engine so steering input is fed more directly to the wheels.
Real MPG average for a Audi A4 (2008 – 2015)
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On the inside of an Audi A4 (2008 – 2015)
Great looking. Comfortable, with those clever Audi seats that don't feel quite right when you first sit in them but which you thank when you finally step out of the car without a twinge. It's also beautifully made, of course, giving the feeling of solid, long-lasting quality. It cruises sweetly in 6th at 30mph per 1,000rpm. And at 480 litres the boot is huge.
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Driving Audi A4 (2008 – 2015)
Worth noting is that the new 160PS 1.8TFSI engine is held together by a chain rather than a belt. So no need for expensive 4-year belt changes. The only little belter left in the line-up is the 2.0TDI that will later be offered with three different outputs up to around 175PS.
Among the car's new features Audi offers a system it calls ‘Audi Drive Select' that, as on the BMW M3, allows you to select ‘comfort', ‘active' or ‘dynamic' roles for the engine, steering and suspension responses, then also lets you custom tailor them to your own package of preferences.
All new A4s also have daytime running LED halo lights that don't dazzle oncoming motorists or render motorcyclists invisible.
I couldn't really tell anything much from around 10 miles in the 1.8TFSI Multitronic. Just that it's uncannily quiet and the only noises felt in the cabin were the thumping of tyres from the occasionally broken road surfaces we were driving on.
I got on a lot better with the 1.8TFSI manual that I took on a short 27 km handling route through the mountains.
It has a sweet enough engine and it turns-in, grips and handles more fluidly than A4 B6s and B7s. You can get plenty of pleasure from driving it, but there's still a small trace of lumpiness at the front emphasised by a shortage of torque. These aren't big problems and don't irritate, but the car isn't quite as finely balanced as the new Mondeo.
Next, a tale of two quattros, both 3.0 V6 TDIs, both manual, both the same colour, both on Michelin Pilot Primacy HP tyres, and both with the latest quattro system that works on a 60/40 rear bias that in theory should kill understeer.
Both also had Audi Drive Select. Yet in ‘dynamic' the first car seemed to understeer when I booted it out of the apex of bends.
I complained, was taken on a test drive by a former German rally driver who demonstrated that there was nothing wrong with it on a slalom course. And maybe there wasn't. Maybe I just hadn't selected ‘dynamic' mode properly. Or maybe the roads I drove it on had bends with tightening radii that naturally force any car into understeer, even quattros.
So, with half an hour of testing left, I took the second 3.0 V6 quattro on the same Michelin Pilot Primacy HP tyres on the same 27 kilometre handling route at the 1.8TFSI. And that turned out to be my kind of car.
The gearchange was still far from perfect. But the engine was much more lively then the first. And the ‘dynamic' setting worked as a quattro should, pulling the car into the bend from the apex instead of scrubbing off speed running wide.
Bags of grunt too, from 240PS and 500Nm torque from 1,500rpm to 5,000. It's long geared in 6th at 40mph per 1,000rpm. And with C02 within Band E (£165pa), together with a potential 40.9mpg, you could almost make sense of the money sums too.
The 2.0TDI 143 is absolutely fine. Better, in my opinion, then than the 1.8T because it had bags more grunt to pull the tall gearing of around 32.5mph per 1,000rpm in top. Yet even though it had a heavier engine it also seemed better balanced in the turns then the 1.8TFSI. And the gearshift was fine as well. I hitched ride back to the airport in the same car and it passed the back seat test too. Combined with the better fuel economy, lower VED (£115pa) and lower BIK it's definitely worth the extra £1,400 over the 1.8TFSI.
Finally, the 2.7V6 TDI Multitronic, again front-wheel drive, but with the benefit of Audi's latest 7-plate clutch CVT. That was lovely, shifting seamlessly on the steering wheel paddles and left-foot braking smoothly into the turns. It could be driven very quickly indeed without alerting passengers to the velocity they were travelling.
It worked well left to self-select too, effortlessly picking up speed to overtake slow moving trucks, and later, on a long twisting descent, stuck behind another car it also offered over-run braking. Unlike other autos left in ‘drive', this works like selecting a lower gear in a manual and retards the car just enough that you don't have to brake all the time. A very useful unexpected feature. Not only that, being CVT rather than torque converter, it's a low £165pa Band E VED.
So what's it to be?
Common sense and a surprising level of ability say it has to be the 2.0TDI. Bur for frugal fun, if you have to have an automatic, then stump up the extra six grand for the 2.7TDI Multitronic.
|1.8 TFSI||40–50 mpg||8.1–8.6 s||134–164 g/km|
|1.8 TFSI 120||40–44 mpg||10.5 s||151–164 g/km|
|1.8 TFSI 170||46–50 mpg||8.1 s||134–142 g/km|
|1.8 TFSI 170 multitronic||46–49 mpg||8.3 s||134–144 g/km|
|1.8 TFSI multitronic||39–49 mpg||8.3–8.6 s||134–169 g/km|
|2.0 TDI 120||58 mpg||10.7 s||127–129 g/km|
|2.0 TDI 136||61 mpg||9.5 s||120 g/km|
|2.0 TDI 136 Ultra||69 mpg||9.3 s||108 g/km|
|2.0 TDI 143||49–63 mpg||9.2–9.4 s||119–149 g/km|
|2.0 TDI 143 multitronic||49–59 mpg||9.1–9.4 s||127–149 g/km|
|2.0 TDI 150||60–63 mpg||9.2 s||119–124 g/km|
|2.0 TDI 150 multitronic||57–59 mpg||9.1 s||127–131 g/km|
|2.0 TDI 163 Ultra||67 mpg||8.3 s||109 g/km|
|2.0 TDI 170||55 mpg||8.3 s||134 g/km|
|2.0 TDI 170 quattro||50–51 mpg||8.3 s||145–149 g/km|
|2.0 TDI 177||61 mpg||8.2 s||120 g/km|
|2.0 TDI 177 multitronic||59 mpg||7.9 s||127 g/km|
|2.0 TDI 177 quattro||55 mpg||7.8 s||134 g/km|
|2.0 TDI 177 quattro S tronic||53 mpg||7.9 s||139 g/km|
|2.0 TDI 190||58–60 mpg||7.7 s||124–129 g/km|
|2.0 TDI 190 multitronic||57–59 mpg||7.8 s||126–131 g/km|
|2.0 TDI 190 quattro||52–54 mpg||7.4 s||135–140 g/km|
|2.0 TDI 190 quattro S tronic||52–53 mpg||7.3 s||139–143 g/km|
|2.0 TDI Ultra||67 mpg||8.3 s||109 g/km|
|2.0 TDIe||61 mpg||9.5 s||119 g/km|
|2.0 TDIe 136||66 mpg||9.3 s||112 g/km|
|2.0 TDIe 163||64 mpg||8.4 s||115 g/km|
|2.0 TFSI||44 mpg||6.9 s||149 g/km|
|2.0 TFSI 225 quattro S tronic||39 mpg||6.4 s||166 g/km|
|2.0 TFSI multitronic||40–47 mpg||6.9 s||140–167 g/km|
|2.0 TFSI quattro||38–42 mpg||6.5–6.6 s||159–175 g/km|
|2.0 TFSI quattro S tronic||40–42 mpg||6.4–6.5 s||155 g/km|
|2.7 TDI||44 mpg||7.7 s||167 g/km|
|3.0 TDI||58 mpg||7.1 s||129 g/km|
|3.0 TDI 245 quattro S tronic||46 mpg||5.9 s||162 g/km|
|3.0 TDI quattro||43–49 mpg||6.1 s||152–173 g/km|
|3.0 TDI quattro S tronic||43–50 mpg||5.9–6.2 s||149–174 g/km|
|3.2 FSI multitronic||34 mpg||6.5 s||192 g/km|
|3.2 FSI quattro||31–32 mpg||6.2 s||213–214 g/km|
|3.2 FSI quattro tiptronic||30 mpg||6.4 s||215 g/km|
|S4 3.0 TFSI quattro||28 mpg||5.1 s||234 g/km|
|S4 3.0 TFSI quattro S tronic||30–37 mpg||5.0–5.3 s||178–219 g/km|
Audi A4 (2008 – 2015) Models and Specs
|Kerb Weight||1410–1705 kg|
|Boot Space||480–962 L|
|Standard||Space-saving spare wheel / Tyre-repair kit|
|Road Tax Bands||B–L|
|Official MPG||28.2–68.9 mpg|
|Euro NCAP Safety Ratings|
On sale until October 2015
On sale until April 2015
On sale until November 2014
|1.8 TFSI SE 120 4dr||£24,685||43.5 mpg||10.5 s|
|1.8 TFSI SE 170 4dr||£26,300||49.6 mpg||8.1 s|
|1.8 TFSI SE 170 multitronic 4dr Auto||£27,780||48.7 mpg||8.3 s|
|2.0 TDI SE 150 multitronic 4dr Auto||£29,155||58.9 mpg||9.1 s|
|2.0 TDI SE quattro 177 4dr||£30,180||55.4 mpg||7.8 s|
|2.0 TDI SE quattro 177 S tronic 4dr Auto||£31,660||53.3 mpg||7.9 s|
|2.0 TDI Ultra SE 163 4dr||£28,620||67.3 mpg||8.3 s|
|2.0 TFSI SE quattro 225 S tronic 4dr Auto||£31,945||42.2 mpg||6.4 s|
|3.0 TDI SE quattro 245 S tronic 4dr Auto||£35,660||49.6 mpg||5.9 s|
On sale until September 2014
|1.8 TFSI Black Edition 120 4dr||£28,315||43.5 mpg||10.5 s|
|1.8 TFSI Black Edition 170 4dr||£29,930||49.6 mpg||8.1 s|
|1.8 TFSI Black Edition 170 multitronic 4dr Auto||£31,410||48.7 mpg||8.3 s|
|2.0 TDI Black Edition 150 4dr||£31,305||62.8 mpg||9.2 s|
|2.0 TDI Black Edition 150 multitronic 4dr Auto||£32,785||58.9 mpg||9.1 s|
|2.0 TDI Black Edition 177 4dr||£32,250||61.4 mpg||8.2 s|
|2.0 TDI Black Edition 177 multitronic 4dr Auto||£33,730||58.9 mpg||7.9 s|
|2.0 TDI Black Edition quattro 177 4dr||£33,810||55.4 mpg||7.8 s|
|2.0 TDI Black Edition quattro 177 S tronic 4dr Auto||£35,290||53.3 mpg||7.9 s|
|2.0 TFSI Black Edition quattro 225 S tronic 4dr Auto||£35,575||42.2 mpg||6.4 s|
|3.0 TDI Black Edition quattro 245 S tronic 4dr Auto||£39,290||49.6 mpg||5.9 s|
On sale until July 2013
|2.0 TDIe (163ps) SE 4dr||£27,900||64.2 mpg||8.4 s|
|2.0 TDIe (163ps) SE Technik 4dr||£29,250||64.2 mpg||8.4 s|
On sale until June 2013
|2.0 TDI (143ps) Black Edition 4dr||£30,585||62.8 mpg||9.2 s|
|2.0 TDI (143ps) Black Edition multitronic 4dr Auto||£32,065||58.9 mpg||9.1 s|
|2.0 TDI (143ps) S line 4dr||£29,510||62.8 mpg||9.2 s|
|2.0 TDI (143ps) S line multitronic 4dr Auto||£30,990||58.9 mpg||9.1 s|
|2.0 TDI (143ps) SE multitronic 4dr Auto||£28,435||58.9 mpg||9.1 s|
|2.0 TDI (143ps) SE Technik multitronic 4dr Auto||£29,785||58.9 mpg||9.1 s|
|2.0 TFSI quattro Black Edition S tronic 4dr Auto||£34,850||40.4 mpg||6.5 s|
|2.0 TFSI quattro S line S tronic 4dr Auto||£33,775||40.4 mpg||6.5 s|
|2.0 TFSI quattro SE S tronic 4dr Auto||£31,220||40.4 mpg||6.5 s|
|2.0 TFSI quattro SE Technik S tronic 4dr Auto||£32,570||40.4 mpg||6.5 s|
On sale until November 2012
|2.0 TDI (143ps) SE 4dr||£26,555||62.8 mpg||9.2 s|
|2.0 TDI (143ps) SE Technik 4dr||£27,655||62.8 mpg||9.2 s|
|2.0 TDI (177ps) S line multitronic 4dr Auto||£31,610||58.9 mpg||7.9 s|
|2.0 TDI (177ps) SE 4dr||£27,575||61.4 mpg||8.2 s|
|2.0 TDI (177ps) SE multitronic 4dr Auto||£29,055||58.9 mpg||7.9 s|
|2.0 TDI (177ps) SE Technik 4dr||£28,675||61.4 mpg||8.2 s|
|2.0 TDI (177ps) SE Technik multitronic 4dr Auto||£30,155||58.9 mpg||7.9 s|
|2.0 TFSI quattro S line 4dr||£31,730||41.5 mpg||6.5 s|
|2.0 TFSI quattro SE 4dr||£29,175||41.5 mpg||6.5 s|
|2.0 TFSI S line multitronic 4dr Auto||£31,730||47.1 mpg||6.9 s|
|2.0 TFSI SE multitronic 4dr Auto||£29,175||47.1 mpg||6.9 s|
|3.0 TDI quattro S line 4dr||£35,715||48.7 mpg||6.1 s|
|3.0 TDI quattro SE 4dr||£33,160||48.7 mpg||6.1 s|
|3.0 TDI S line 4dr Auto||£33,045||57.6 mpg||7.1 s|
|3.0 TDI SE 4dr Auto||£30,490||57.6 mpg||7.1 s|
On sale until October 2011
On sale until June 2010
|2.0 TDI (120 ps) S line 4dr||£27,610||57.6 mpg||10.7 s|
|2.0 TDI (120 ps) SE 4dr||£25,110||57.6 mpg||10.7 s|
|2.0 TDI (120ps) 4dr||£23,910||57.6 mpg||10.7 s|
|2.0 TDI (143ps) 4dr||£24,720||56.5 mpg||9.4 s|
|2.0 TDI (143ps) 4dr Auto||£24,720||48.7 mpg||9.4 s|
|2.0 TDI (143ps) S line 4dr||£28,420||56.5 mpg||9.4 s|
|2.0 TDI (143ps) S line 4dr Auto||£28,420||48.7 mpg||9.4 s|
|2.0 TDI (143ps) SE 4dr||£25,920||56.5 mpg||9.4 s|
|2.0 TDI (143ps) SE 4dr Auto||£25,920||48.7 mpg||9.4 s|
|2.0 TDIe 4dr||£24,610||61.4 mpg||9.5 s|
|2.0 TDIe SE 4dr||£25,810||61.4 mpg||9.5 s|
On sale until October 2009
- Euro NCAP 5 Star adult protection, 4 Star child protection, 2 Star pedestrian protection.
What to watch out for
Multitronic models built before third week of March 2008 may not have the correct chips fitted to the transmission, cooling and charging system, so that the ECU cannot accept recoding when a towbar is retro-fitted (meaning that trailer stability control, etc cannot be engaged and potentially breaking warranty if used to tow). Audi UK is aware of this problem (but does not appear to have told its dealers) and offered one reader £1,500 towards the £3,000 cost of replacements (took three days to fit) as long as the towbar was fitted by an Audi dealer. The reader's dealer met a proportion of the remainder as the car was sold to him as suitable for towing. Can be a serious problem if having towbar retro-fitted outside dealer network.
14-03-11: 3.0 TDI quattro prone to water pump failure and also prone to losing coolant from the water cooled EGR valve.
11-05-11: Apparent "design fault" with 2 litre (petrol) engines that leads to excessive oil consumption. One reader's 6 month old, 4,000 mile A5 2.0 petrol taken in for "modification". New Audi 2.0 petrol engines already have this "modification".
28-3-2012: DMF problems starting to emerge on manual 2.0 TDI 170 where clutches are lifted at idle revs.
20-7-2012: Sporadic reports of high oil consumption of chain cam 1.8 TFSI and 2.0 TFSI engines. Apparently Audi considers 1,000 miles a litre to be "normal" oil consumption for these engines. The reason is probably filling the engines with synthetic oil on the production line and owners not revving the engines sufficiently to bed in the oil rings.
25-8-2012: On the 2.0TDI 143 Multitronic, a combination of Multitronic and slow running torque engine plus the complex drive train route leaves the power steering pump at low pressure at some times and can cause a vibration. Best not to use too much steering lock at low speeds.
8-2-2013: Multitronic transmission failed at 2 years 10 months. Replaced under warranty.
21-2-2013: Non-availability of mud-flaps for the enhanced S Line body shape continues and is a known issue to many, many, Audi drivers but being ignored by Audi themselves.
The out-of-date sat-nav system remains an issue and cannot be resolved.
21-2-2013: Failure reported of the Emission Control System of a TDI S Line which was repaired by Audi Assist through the correct alignment of the exhaust gas pipe where it enters the pipe from the intercooler - a known problem according to the fitter covered by an Audi repair sheet on a number of A4 S-line vehicles. This did seriously and adversely affect the performance of the car as the electrically-controlled valve became heavily blocked with emission gas residue.
16-5-2013: Seems to be a problem with turbo oil seals on 2.0 TDI 143 which, in extreme cases, can send so much lube oil into the combustion chamber that the pistons can hydraulic. So the warning is to idle those turbos before switching off from hot. This came from an Audi dealer who also reported frequent 1.8 and 2.0 TFSI engine failures, but gave no detail.
30-8-2013: T urbo failure on 21 month old 25k mile 2.0 TDI. Turbo, exhaust and DPF replaced under warranty. Stop/start system thought to be the culprit.
1-9-2013: £250 waterpump failure on chain cam 95k mile 2009 A4 2.7 TDI Multitronic, closely followed by failure of EGR cooler at £1,200, but Audi offered 70% of parts price.
21-10-2013: Water leaks onto the driver's and front passenger's feet may be due to faulty bulkhead cable seals. Can affect the ECU. Audi dealers will normally fix this under warranty or goodwill.
5-12-2013: Clutch/DMF failed on 2011 Audi A4 at 20,000 kilometres.
16-12-2013: Another clutch failure reported, this on a 35k mile 2011 A4 Avant 2.0 TDI 170 S Line, first felt as judder, diagnoses as "clutch wear", DMF and clutch both replaced at cost of £1,500.
22-1-2014: Flywheel of 52k mile 2011 A4 1.8 TSI Avant lost three teeth, making it difficult to start.
11-2-2014: Used 13k mile 18-month old A4 2.0 TFSI lost compression in one cylinder. Engine stripped, but Audi dealer found ECU had been reprogrammed so turned down warranty claim, leaving car in bits. Dispute now between the owner and whoever sold him the car.
22-2-2014: Excessive oil consumption from engine of 52k mile 2010 A4 2.0 TFSI. Same piston ring problem as A5 and Golf GTI. Only going 400 miles before requiring more engine oil.
2-4-2014: Oil pump drive failure reported on 123,000 mile March 2008 Audi A4 2.0 TDI 143. Hexagonal shaft rounded off at its corners. Quoted repair bill for new oil pump, new balancer shaft assembly, new turbo and turbo oil feed pipe and new sump at £4,500, but loyalty 'goodwill' from Audi brought bill down to £1,000. First B8 the dealer fitter had seen with the problem.
3-5-2014: Failed electric parking brakes notified on a 2008 Audi A4.
14-5-2014: Both front wheel bearings failed on 80k mile 2009 Audi A4 2.0 TDI. Quoted £538 to replace. Goodwill refused.
5-6-2014: Recurrent slippage problems with clutch and DMF of 2009 Audi A4 B8 Avant 2.0 TDI 170. H istory of clutch and DMF issues previously fixed under warranty. 09/2009 – Gear selection issues; 11/2010 – 12,000 miles clutch judder - complete clutch change; 10/2011 – clutch judder again; 02/2012 – 21,000 miles clutch issues still – new DMF and clutch; 05/2014 – 38,000 miles clutch judder again, requires new clutch and DMF again. G earbox and clutch removed, clutch and flywheel have slippage mark, dealer won't come up with a reason for clutch slippage and now says driver error, with no guarantee problem won't return. Dealer wont do anything else apart from replace at cost or put old clutch back.
15-6-2014: 2012 Audi A4 2.0 TFSI Multitronic suffered failure of throttle switch after seen months, then again in May 2014. On both occasions the ECU software was updated promptly by the supplying Audi dealer.
3-10-2014: Another oil consumption problem reported on a 49k mile 2010 Audi A4 2.0 TFSI quattro. 2.0 litres of oil used in 3,000 miles. Oil consumption now being monitored with standard Audi response that up to 1 litre in 1,000 miles is acceptable.
19-12-2014: 18k mile 4-year-old Audi A4 2.0TFSI suffering severe oil consumption problem.
10-4-2015: Used Approved 16k mile 2013 Audi S4 Avant 3.0V6 Supercharged bought in January 2015 suffering loss of oil pressure as soon as engine gets hot. Dealer has replaced various sensors, oil pump, oil filter but this has not solved the problem. Suspect piston oil rings. Previous owners had suffered same problem. Recommended rejection of the car.
12-6-2015: Audi A4 B8 2.0TFSIs did not get the updated EA888 manifold in head engines.
17-10-2015: 2012 'approved used' Audi S4 3.0-litre 333PS, V6 Supercharged reported to be using 0.36 litres of oil per 1,000 kilometres (621 miles). Within Audi limits for the engine. Worth checking turbo oil seals.
8-11-2015: Reader reported clutch and DMF failure on 2009 A4 B8 2.0TDI in 2012 at 26k miles, then again in late 2015 at 58k miles. Independent garage fitting clutch discovered that a modified clutch release fork was required in accordance with an undated Audi TSB.
9-1-2016: Judder reported from manual drivetrain of 2011 Audi A4 Avant at 76,000 miles.
29-1-2016: 2010 Audi A4 1.8TFSI Multitronic reported to be using 1 litre of oil in 1,500 miles.
20-2-2016: Complaint of dark patch in centre of full beam that new headlight units did not cure. (Same complaint as received of another VAG car in last few days.)
26-9-2016: Severe oil consumption reported of 91k mile 2009 Audi A4 2.0TFSI avant quattro. Garage replaced the PCV valve (engine breather) and updated the ECU with the latest software. Badly corroded sump and front crank seal also replaced, but still needs oil wvery 300 miles. More liklely to be piston oil rings than valve stem oil seals.
9-11-2016: Report of alternator failing on 2011 Audi A4 2.0TDI soon after the timing belt was routinely replaced. Could be the aux belt was put back too tight after the timing belt replacement.
22-3-2017: Report of fuel economy of Audi A4 2.0TDI dropping from from 620 to 570miles per tank after the NOx emissions fix.
27-3-2017: Report of 2009 Audi A4 2.0TDI producing a lot of smoke after NOx emissions fix. The Mass Airflow Meter had been replaced byt a brand nrew Bosch unit, but if it is unplugged the smoke stops.
14-8-2017: Report of Audi A4 B8 2.0TDI 170 manual avant requikring four replacement clutches and DMFs because of juddering. One at 20,000 when owner's father had the car. One at 35,000, one at 35,500 (replaced at the cost of Audi) and now Audi is again advising the gearbox is removed and the clutch checked. I know full well they are going to come back with it requiring a new clutch.
31-8-2017: Report of front offside wheel bearing failing on 2014 Audi A4 B8 at 36,000 miles. Dealer made the owner pay for its replacement.
23-1-2018: Audi has ordered by German Federal Motor Transport Agency (KBA) to recall 127,000 cars following the alleged discovery of emissions cheat devices. Affects Audi A4, A5, A6, A7, Q5, SQ5 and Q7 cars fitted with V6TDI diesel engines. According to German newspaper Bild am Sontag (BaS), KBA ordered these vehicles be recalled after detecting “unacceptable shut-off decides” on several new V6 diesel engines which meet current EU6 emissions standards.
28-2-2018: Report of MMI system of 2014 Audi A4 failing in October 2017 at 14,000 miles: the screen is blank and there are no lights on the controls. Owner took the car back to the dealer and after several hours of diagnosis he was told that the '5F' unit had failed (apparently this is the main controller for the MMI that communicates with the sat nav/radio etc) and it would cost £3,500 to replace. Audi is offering no goodwill gesture, so owner is stuck with a non functioning MMI. Fortunately it doesn't really affect the use of the car because heating and ventilation controls are separate.
25-7-2018: 'Emission Control System' indicator lamp came on in 2014 Audi A4 B8 2.0TDI at 40,500 miles. No change in power or fuel economy. Owner took it to Bosch specialist that services it and they carried out a forced DPF regeneration. Light came back on three weeks later whilst travelling on the motorway having completed about 40 miles on that particular journey at approx 70mph. Garage then carried out diagnostics again and fitted a new exhaust sensor, brought it back but didn't seem sure the problem was fixed. Three days later light came on again. This time garage checked the AdBlue manually and said it was down to 2 litres and was causing the problem (had been topped up with 10 litres four months earlier and inany case the warning light normally comes on to warn when it's low). Two journeys later, the light has come on whilst travelling at 60-70 mph. Again, there is no change in performance. We think that the DPF is not actively regenerating using post-injected diesel. Something wrong with that part of the system.
10-8-2018: After TSB replacement of auxiliary heater element of 2013 Audi A4 B8, coolant pump failed to siwtch off and flattened the car's battery. Audi dealer said nothing to do with the TSB. Independent garage begged to differ.
27-9-2018: Problem with 2014 Audi A4 B8 2.0TDI Teknik at 42,000 miles. Car had been back to Audi dealer a month before problem with the emission light started. It was recalled for the Audi auxillary heater issue. Owner's, my Bosch specialist checked the car's records and found that an ECU reflash was carried out by Audi at the same time. (EA189 NOx emissions fix.) Once 'emission control system' indicator lamp came on there was no change in power or anything else and the car drove as usual. Owner took car to Bosch specialist garage who has maintained it from new. It has now been back five times in an attempt to rectify the problem. Each time the light returns after a couple of weeks or so, usually after/during driving on motorways or A roads. The work carried out so far is: 1. Forced regeneration; 2. Exhaust oxygen sensor replaced; 3. Adblue refilled; 4. Oil - some syphoned off as dipstick showing different measurement to engine management system which may have prevented regeneration; 5. Air filter replaced, forced regeneration. Emission light description in Audi manual: "If the indicator lamp lights up or flashes, a malfunction has occurred which can reduce the quality of the exhaust gas and damage the catalytic converter. Drive slowly to a qualified workshop without delay and have the fault rectified."
29-11-2018: Report of failure of dual mass flywheel of 2009 Audi A4 2.0TSI and also failure of the piston rings that resulted in oil consumption of 1 litre per 250 miles.
5-12-2018: Report of AdBlue re-fill reminder of 2015 Audi A4 B8 not re-setting after re-filling with AdBlue.
17-12-2018: Report of very high oil consumption of 2010 Audi A4 B8 avant with EA888 2.0TSI engine.
15-6-2019: Report of catalogue of disaster with 2013/62 Audi A4 Avant S-Line 1.8TFSI, engine code CJE030161. On 21st May 2018 car would not start. AA called and got it going. 22nd May again car would not start again, at 39,900 miles. AA towed to Audi dealer. Audi dealer did an analysis and discovered that the N488 coolant regulator had failed and had tracked to the V50 coolant pump, back up the wiring loom and to the engine ECU. Owner quoted £4,085.58 to effect a repair but was warned that further damage may be found once they were able to start the vehicle. This proved to be the case because it was then discovered that the parking brake control unit needed to be replaced. The total job cost £4,588.24. Owner then discovered that failure of the N488 on the A8, had been the reason for a safety recall for that model in the USA and Canada (Safety Recall Code 80B9.). Despite this, Audi UK refused any goodwill.
3-7-2019: Report of "rolling sensation" at speed in 2014 Audi A4 1.8TFSI CVT. Suspect failing dampers.
11-10-2019: 2.0TDI PD oil pump drive issue explained by cphaza on audi-sport.net<<The problem with the 2.0 PD engine is the drive from the slave balancer shaft to the oil pump, which is a piece of 6 AF hex bar which has inadequate engagement depth with the grooves in the slave shaft. It's the torsional oscillations caused by the balance shafts which destroy the oil pump coupling (the 6mm AF bit of hex) and the chain drive to the balancer shafts before the gear driven systems came out, though these still give problems with the hex key rounding. Think washing machine -> unbalanced load -> keep doing it = new machine. The problem is with lack of concentricity of the drive socket into which the drive rod/hex fits. The drive socket is can be off centre by at least 0.1mm. In engineering terms, this is a massive defect. All the drive sockets in the failed units were off centre, but all the replacement balancer units were dead centre and have not led to a repeat failure. Some replacement balancer units have now done 100k+ miles according to some garages. You will get this problem at some point if you have a 2.0TDi WITH balancer shafts. If your 2.0TDi does NOT have balancer shafts, you will be ok. If you fit the latest balancer shaft/ pump assembly from VAG it will more than likely cure the problem for life as they have made the hex longer and centered it all properly.>>
24-10-2019: Report of EGR of 2012 Audi A4 B8 2.0TDI failing more than two years after the EA189 NOx emissions fix, so outside the 'Rebulding Trust' consequential damage warranty. Owner quoted £650 to replace.
15-11-2019: Report of clutch judder from 24k mile 2015 Audi A4 B8 1.8 TFSI 170PS manual recently purchased from Audi dealer. At slow in-town stop start speeds there is a judder when moving off in 1st gear at low rpm of 1,000 - 1,400 rpm. Sometimes it can appear as if the clutch snatches. However, if brought to around 2,000 rpm before releasing the clutch, the car moves off smoothly. Owner had clutch assessed at a different Audi dealer who pronouced it okay.
31-12-2011: Apparently, all VAG models with the 2.0TDI engine from around 2005 fitted with Siemens peizo injectors are subject to a recall which involves replacing all the injectors FOC. Job takes around 3 hours. A short circuit within the injectors causes the fuel system to shut down and engine cuts out.
4-11-2015: EA288 1.8TFSI and 2.0TFSI engines recalled in USA because the rear camshaft lobe is prone to unexpectedly shear off from the shaft. The failure causes reduced engine power and loss of vacuum pump power, cutting vacuum supply to the brake booster and eventually resulting in increased braking effort."A reduction in engine power and/or increased need for braking effort after vacuum reserve has been depleted while driving can increase the risk of a crash," a statement cautions. The campaign affects approximately 92,000 vehicles including the 2015-2016 Beetle, Beetle Convertible, Golf, Golf GTI, Golf SportWagen, Jetta and Passat. In notifying the National Highway Traffic Safety Administration, VAG stated that the root cause of the camshaft failures has not been fully understood. The company is still continuing an in-depth failure analysis and development of a repair solution, however a fix may not be ready until the end of the first quarter of 2016.
(Undated): TSB at some time between 2010 and 2015 to replace clutch release fork of A4 B8 2.0TDI with a modified release fork. The old release fork may have accounted for clutch and DMF failures.
01-05-2017: R/2017/115: COOLANT PUMP MAY OVERHEAT. Foreign particles in the engine coolant can lead to a blockage in the additional coolant pump and cause the pump to overheat.Foreign particles in the coolant can lead to a blockage in the additional coolant pump and cause the pump to overheat. Fix: Recall the machines that are likely to be affected and update the software, which will deactivate the additional coolant pump in the event of malfunction. If there has been a malfunction of the additional water pump, it will be replaced. VINS: WAUZZZ8D0CN002863 to WAUZZZ8FXDN018070; WAUZZZ8T0CA007557 to WAUZZZ8TXDA078749; WAUZZZ8K0DA002920 to WAUZZZ8KZDA250141; WA1CFAFP2DA094219 to WA1LFBFPXFA065950; WAUFFBFC9EN010054 to WAUFFBFC9EN010054. Build dates: 01-05-2011 to 31-10-2016.
08-01-2018/R/2017/334: AUXILLIARY HEATER ELEMENT IN AIR CONDITIONING MAY FAIL AND/OR OVERHEAT. The auxilliary heater element in the air conditioner may fail as a result of overheating in the area of the connectors, in conjunction with smoulder damage or potential fire. Fix: Recall the vehicles that are likely to be affected and fit an auxilliary heater element with opimised electrical connectors. The activation of the electric auxilliary heater must be adjusted by updating the software for the air conditioning control console. VINs: WAUZZZ8F9BN017814 to WAUZZZ8F3GN002622; WAUZZZ8K3BA148578 to WAUZZZ8K8GA006511; WAUZZZ8R0BA099157 to WAUZZZ8R9GA037179; WAUZZZ8T6BA072380 to WAUZZZ8T4GA015182. Build dates: 02-04-2011 to 01-08-2015.
- September 2007: Audi A4 launched
- June 2008
- July 2008
- February 2009
- May 2009: Audi S4 unveiled
- July 2009
- August 2009
- October 2011: Revised A4 announced
- June 2013
- March 2014: Audi A4 TDI Ultra launched
Audi A4 launched
Opened for UK order from October 2007. First UK deliveries March 2008. 4,703mm long and 1,826mm wide. New sports chassis with repositioned front axle, all new steering and latest generation quattro system with 40:60 torque split.
Longest wheelbase in the class giving reduced overhangs for optimised weight distribution and exceptional interior space. Engines at launch (UK): 1.8 TFSI 160PS, 3.2 FSI 265PS, 2.0 TDI 143PS, 2.7 TDI 190PS, 3.0 TDI 240PS. Advanced features including Audi Drive Select enabling tailoring of throttle, steering and suspension characteristics to suit driver preferences.
FSI direct petrol injection and common rail piezo TDI engine range at launch in the UK includes 160PS 1.8 Turbo FSI four-cylinder, 265PS 3.2-litre V6 FSI, 143PS 2.0-litre TDI, 190PS 2.7-litre TDI and 240PS 3.0-litre TDI.
Depending on engine chosen, option of either the latest six-speed manual gearbox, an extensively revised, faster-shifting six-speed tiptronic automatic transmission or an updated, even smoother version of the ultra-efficient multitronic continuously variable automatic transmission (CVT) with hill descent control.
A4 1.8TFSI 160 SE 6-speed manual £22,590
A4 3.2FSI 265 SE quattro 6-speed manual £29,680
A4 2.0TDI 143 SE 6-speed manual £23,940
A4 2.7TDI V6 190 SE Multitronic CVT £28,440
A4 3.0TDI V6 240 SE 6-speed manual £30,290
New S line sports specification available from Feb 2008 for all versions of the A4 Saloon at a premium of £2,500 over the SE model in each case. Identifiable by LED strip daytime running lights, S line suspension including 30mm ride height reduction, 18-inch alloy wheels, body and interior upgrades. S line launch coincides with introduction of new lead-in 120PS 1.8 TFSI petrol engine available in conjunction with standard, SE and S line trim levels
Not to be confused with the 1.8-litre Turbo engine that has powered everything from the TT to the A6 in the past, the unit that had so far appeared in the A3 and new A4 in 160PS form is completely new. In its latest 120PS configuration it benefits from the same combination of turbo charging and FSI direct petrol injection for keen response and impressive overall efficiency, which is evidenced in the A4 1.8 TFSI (120PS) by a 0-60mph time of 10.2 seconds, a top speed of 130mph and 39.8mpg combined economy, delivered with a modest 169g/km CO2 output.
The new 120PS engine is available exclusively in conjunction with a six-speed manual gearbox, but for drivers who prefer the convenience of an automatic, the unique-in-class multitronic continuously variable transmission (CVT) has also just opened for order in the new A4 in conjunction with the 160PS version of the 1.8 TFSI engine.
Multitronic maintains the same 8.3-second 0-60mph time and 140mph top speed as the manual A4 1.8 TFSI (160PS). Unusually by automatic transmission standards, the 37.2 mpg combined consumption figure and 179g/km CO2 output it achieves also run the manual version impressively close (39.8mpg, 169g/km).
The A4 1.8 TFSI (120PS) is the first A4 model to be offered in standard specification. In addition to range-wide benefits normally associated with the executive class, such as a space-liberating electromechanical parking brake, intelligent key access and an auto-opening boot lid, it includes 16-inch alloy wheels, an 80-watt audio system with single CD drive and 6.5-inch display, electronic climate control, front and rear electric windows and a split/fold
Latest seven-speed S tronic twin-clutch transmission available with longitudinal engines from late 2008. Where existing six-speed S tronic was limited to the transversely mounted units in TT and A3, the latest transmission with 550Nm torque threshold can technically be fitted to new A4, A5, Q5 and more models in the future.
Range update announced offering lower emissions from petrol and diesel engines.
A4 2.0 TDI 120PS offered in conjunction with Standard, SE and S line specification priced from £22,150 OTR to £26,550 OTR
A4 chain cam 2.0 TFSI 211PS available in front-wheel-drive and quattro four-wheel-drive forms and with SE or S line specification priced from £24,625 OTR to £29,700 OTR
A4 2.0 TDI 120PS @ 4,200rpm, 290Nm @ 1,750-2,500rpm - Saloon manual 0-62mph in 10.7 seconds, top speed 127mph, combined mpg 55.4, CO2 134g/km
A4 chain cam 2.0 TFSI 211PS @ 4,300-6,000rpm, 350Nm @ 1,500-4,200rpm - Saloon manual 0-62mph in 6.9 seconds, top speed 155mph, combined mpg 42.8, CO2 154g/km. 2.0 TFSI is all-new and based on latest generation 1.8 TFSI unit also used by A4, but adds Audi valvelift technology to further improve engine ‘breathing’.
2.0 TDI features advanced common rail injection technology including sophisticated piezo injectors for optimum efficiency 120PS @ 4,200rpm, 290Nm @ 1,750-2,500rpm.
New 170PS version of 2.0-litre piezo injected common rail TDI engine joins 120PS and 143PS versions in A4 Saloon and Avant models. Front-wheel-drive and quattro all-wheel-drive, and in conjunction with SE or S line specification priced from £24,600 OTR to £27,175 OTR
A4 2.0 TDI 170PS @ 4,200rpm, 350Nm @ 1,750-2,500rpm - Saloon manual 0-60mph in 8.0 seconds, top speed 143mph, combined mpg 53.3, CO2 140g/km 350Nm of torque delivered via a six-speed manual from 1,750rpm.
All-new S4 and S4 Avant models debut at 2008 Salon de l’Auto in Paris, 2-10-2008. Available to order in UK from late November priced from approximately £36,000 for first deliveries in April 2009. Supercharged V6 TFSI with 333PS and 440Nm from 2,500-4,850rpm replaces naturally aspirated V8. Six-speed manual or optional seven-speed S tronic twin-clutch transmission that actually further improves fuel economy. Evolution of quattro system with active sport differential capable of varying torque not only between front and rear axles but also between each rear wheel.
New S tronic twin-clutch transmission configured for longitudinal engine installations first used in Q5 SUV and S4 Saloon and Avant – now available in chain cam 2.0-litre TFSI quattro versions of the A4 and A5. Premium of £1,420 over manual transmission. A4 2.0 TFSI quattro S tronic £27,170 OTR, A4 Avant 2.0 TFSI quattro S tronic £28,295 OTR, A5 2.0 TFSI quattro S tronic £31,065 OTR.
S tronic twin-clutch transmission delivers exceptionally rapid gearchanges with no interruption to power flow, reducing acceleration time yet retaining fuel economy and CO2 at the level of manual equivalents
A4 chain cam 2.0 TFSI quattro S tronic 0-62mph in 6.5 seconds (manual 6.6), top speed 150mph (manual 153mph), combined mpg 38.2 (manual 38.2), CO2 172g/km (manual 172g/km)
A4 also now available with new Executive SE and Executive S line specification options
Audi S4 unveiled
Innovative new rear axle for quattro system transforms handling responses by enabling variable torque distribution not only between front and rear axles but also between the rear wheels. Sport differential to be offered initially for the S4 (Saloon £34,260 OTR, Avant £35,600 OTR) as an optional element of the Audi drive select system, but will be rolled out for further models.
With its new active sport differential, Audi elevates the road dynamics of the new S4 quattro. A unique electronic regulating system distributes torque from the engine in continuously variable proportions left and right between the rear wheels, the resulting controlled power flow enabling the car to take corners even more responsively, and to retain its directional stability for considerably longer. With its help the potential for adjustment of the cornering line is much increased and understeer effectively becomes a thing of the past.
Six advances combine to create Audi S4 dynamics. The longer wheelbase of the latest A4 range and its forward mounted axle are the first and second elements, and help to establish the well-balanced basis of the chassis layout. Thirdly, a more advanced 40:60(front/rear) power distribution via quattro contributes to handling poise. For the fourth stage Audi then adds its unique and advanced drive select system enabling the driver to select comfort-oriented or more dynamic settings influencing throttle, steering and suspension response to suit widely varying individual preferences. The most notable advance within drive select is the ability to increase effective steering rack speed.
The 7-speed double clutch S tronic gearbox configured especially for longitudinal or ‘north - south’ application is the fifth key ingredient. This rapid acting, highly-efficient transmission is equipped with shift paddles and reacts responsively in its close interaction with the engine. Downshifts for example generate an automatic ‘blip’ of the throttle.
Finally, the sixth advance is the integration of the sport rear axle for the quattro permanent four-wheel-drive system. Taken to extremes normally reserved for the race circuit it readily allows the driver to create over steer in a controlled way, but its influence over agility and adjustability can be felt throughout the speed range, with the help of the car’s ESP stability control system which has been reconfigured to intervene later to allow maximum exploitation.
With the new sport differential influencing drive to the rear wheels, the S4 exhibits exceptional traction and stability. Close to the car’s handling limits, it acts like ESP, but with the principle reversed: corrective movements are not initiated solely by altering the engine settings or applying the brakes, but also by controlled redistribution of tractive force. As a result the car’s progress is distinctly smoother and more free-flowing, since ESP comes into action much less frequently.
Since its reaction time is extremely short – less than 100 milliseconds – the sport differential takes effect even more rapidly than ESP. Furthermore, ESP can only react to a discrepancy between the car’s steering angle and its actual body rotation (yaw), whereas the sport differential influences the car’s dynamic behaviour before any such discrepancies occur.
Depending on steering angle, lateral acceleration, yaw angle, road speed and other signals, the car’s control unit calculates the most suitable distribution of torque to the wheels for every driving situation. When the steering wheel is turned, for example, or the car accelerated in a corner, power is redirected in a controlled manner to the outer rear wheel. This has the effect of “forcing” the car into the corner so that the angle of the front wheels is followed accurately. The difference in tractive force between the left and right rear wheels also exerts a steering effect, so that the usual steering corrections by the driver are no longer needed. As a result understeer, or the tendency for the car to run wide at the front, is to all intents and purposes eliminated.
Buttons on the centre console enable drivers to vary the operating parameters of the sport differential as part of the Audi drive select adaptive dynamics system in three stages. In the ‘comfort’ mode, driving safety and the car’s stability have absolute priority, with optimal damping of load reversals. In the ‘auto’ mode the program calculates the best possible balance between all the functions. Finally, the ‘dynamic’ mode emphasises the functions contributing to maximum agility, so that the action of the sport differential is most easily felt. In this case, response to load reversals is both agile and easily controllable.
The drive select system also enables the driver to determine the engine’s throttle response characteristics, the feel of the servotronic speed-dependent power steering and the shift points selected by the S tronic transmission, where fitted.
Audi drive select with the sport differential can also be combined with electronic damping control. The gas-filled hydraulic shock absorbers have an additional valve with a continuous opening action. At a cycle frequency of 1000 per second, the control unit computes the optimal damping force. The electromagnetically controlled valve selects a damping characteristic to match the current driving situation at any given moment. Higher damping force may be needed to resist body movement when cornering rapidly or braking, whereas a lower damping force will be appropriate on potholed roads and a moderate setting on poor country roads.
The dynamic steering system uses a superimposed zero-play transmission to vary the effective steering ratio according to road speed. The extremely light, compact and torsionally rigid axial transmission is integrated into the steering column and combined with an electric motor. It operates without any play and is therefore extremely precise, varying its ratio by almost 100 per cent depending on road speed and the drive select mode chosen. When the car is being parked, the steering is extremely direct, whereas when driving in a straight line at high motorway speeds a more indirect steering ratio and reduced power assistance help to optimise the car’s directional stability.
S4's 3.0-litre, V6 power unit produces 333PS thanks to a supercharger generating a "seamless flow of power" from 440Nm of torque. This new V6 replaced the V8 engine of the previous S4 and delivers a 26 per cent cut in fuel consumption and CO2 without any penalty in performance. 0-60mph in 5.1 seconds. Advanced fuelling system uses FSI direct injection combined with Audi valve lift technology to create one of the most efficient high performance engines of its kind.
New A4 2.0 TDIe combines 61.4mpg and 120g CO2 output with strong performance from 136PS common rail diesel. Start-stop and energy recuperation systems. Priced from £23,340 OTR. A4 2.0 TDIe six-speed manual - 136PS @ 4,200rpm, 320Nm @ 1,750-2,500rpm, 0-62mph in 9.5 seconds, top speed 143mph. Supplements 2.0-litre TDI range that already includes 120PS, 143PS and 170PS options.
Audi A4 3.0 TDI clean diesel quattro. The A4 3.0 TDI clean diesel quattro already complies with the emission limits of the EU's Euro 6 standard, expected to become law in 2014. It is also very fuel-efficient, with the potential to cover up to 42.1mpg (Avant: 41.5mpg). And this TDI engine is indeed a powerful performer, needing only 6.2 seconds (Avant: 6.3 seconds) to go from zero to 62mph. Top speed is electronically governed to 155mph. In conjunction with a six-speed tiptronic and quattro permanent all-wheel drive, this vehicle guarantees a high degree of comfort and superior traction.
Revised A4 announced
The new look accentuates the horizontal lines at the front end. The engine hood is more arched, the upper corners of the single frame grille are tapered, and the cross ribs and the Audi rings are highlighted three-dimensionally. The grille is painted grey, with high-gloss black on the six-cylinder models or in combination with the S line exterior package. The redesigned bumpers have angular air inlets, revised grilles and flat front fog lights. The A4 allroad quattro has horizontal chrome applications to the grille and round fog lights.
The headlights now have a slight wave at the bottom edges, and a re-arranged interior. Xenon plus headlights are available as optional equipment or standard on S line models. The LED daytime running lights form a narrow, optically continuous band that remains open in the vicinity of the xenon lens. The adaptive light, together with dynamic and static cornering lights, are available as an option.
The tail lights reflect the shape of the headlights, and in combination with Xenon plus have strips of LEDs. The bumper with its diffuser insert has been redesigned, with the exhaust system always terminating in two tailpipes.
The Saloon and the Avant offer the S line exterior package, while the Avant also includes a roof spoiler.
The A4 Saloon and the Avant each have a length of 4.70 metres(15.42 ft), while the A4 allroad quattro and the S4 are 4.72 metres(15.49 ft)long. The wheelbases for all models are 2.81 metres(9.22 ft), and the width is 1.83 and 1.84 metres, respectively(6.0 and 6.04 ft). The height varies between 1.41 and 1.50 metres(4.63 and 4.92 ft)depending on the body version.
Interiors have also been refined. New steering wheels with chrome and high-gloss inlays, with the leather sport steering wheel also featuring a flattened lower rim. The steering arm and the ignition key have been modified. High-gloss applications and the slender chrome trim at the controls add elegance to the interior.
The MMI navigation plus system now features four instead of eight buttons, with a shift function integrated in the volume control dial. Other improvements concern operation of the automatic transmission, the efficient air conditioning systems, Audi drive select and the multifunction steering wheel. The seat heating and air conditioning are now directly operated at the respective buttons.
All interior colours – except black – have been re-coordinated. The upholstery range has also been revised, with Fine Nappa leather replacing Valcona leather. The new, single-part cluster trim has been adapted in colour to the interior, while the inlays are available in Aluminium Trigon, walnut dark brown and fine grain ash natural. Especially eye-catching is the Beaufort oak plywood inlay.
The interior of the S line sport package comes in black. 18-inch wheels or the optional 19-inch wheels and Sport suspension that lowers the body by 20 millimetres complete the package. S line sport suspension, which lowers the body by a further 10 millimetres, is also available as a no-cost option on S line models. Audi exclusive and Audi exclusive line offer further individualised options.
The A4 Saloon’s luggage compartment retains is 480-litre capacity – 962 litres with the rear seats folded down. The A4 Avant and the A4 allroad quattro have 490 and 1,430 litres, respectively, with Audi offering an optional electrically-operated tailgate for both models.
Fuel consumption levels have dropped by 11 percent on average, despite increased power and torque of many of the engines. In the UK, Audi will offer a choice of five diesel and four petrol engines for both the Saloon and the Avant. All engines are supercharged direct-injection systems; the start-stop system and the recuperation system are standard throughout.
The EA189TDI engines are replaced by the EA288. These engines combine pulling power with pioneering efficiency, with the four-cylinder versions presenting extensive modifications. A new centrifugal pendulum-type absorber (in the 2.0 TDI with 136PS, 163PS or 177PS with quattro drive) in the dual-mass flywheel makes engine running even more refined and quieter at low revs, for even earlier upshifting and better fuel efficiency.
The most economical variant in the model family is the Audi A4 2.0 TDI with 136PS. In the Saloon, this engine helps the car achieve 67.3mpg on the combined cycle – a CO 2 equivalent of just 112 grams per km. The new A4 2.0 TDI with 163PS, also optimised for maximum efficiency, achieves 64.2mpg. This equates to 115 grams CO 2 per km. Both engines are available for the Saloon and the Avant.
In addition, two other four-cylinder diesel engines are available – with 143PS and 177PS. They can also be ordered for the allroad quattro, apart from the entry-level version. Three V6 TDI units complete the line. The 3.0 TDI with 204PS (not for the allroad quattro) is the most efficient six-cylinder engine in its class worldwide; in the A4 Saloon it helps the car achieve 57.6mpg on the combined cycle. The second variant, the 3.0 TDI, generates 245PS.
The A4 series also presents the latest state of the art in petrol engine technology. A new highlight of the TFSI family is the new 1.8-litre engine, available for the Saloon and the Avant. The four-cylinder engine delivers sporty thrust, with a power output of 170PS and 320 Nm (236.02 lb-ft)of torque, and impressive economy figures of 50.4mpg and 134 grams CO 2 per km. That is an efficiency improvement of 19 percent compared with the predecessor engine.
The new 1.8 TFSI engine features many innovations: in the control of its valves and their lift, in the novel thermal management system, in the fuel injection system, in the turbocharger and in the integration of the exhaust manifold in the cylinder head. The engine weighs 3.5 kilograms less and its internal friction has sharply decreased.
The entry-level petrol engine is the 1.8 TFSI with 120PS. The 2.0 TFSI – as the only spark-ignition engine also available in the A4 allroad quattro – delivers 211PS. At the top of the line is the 3.0 TFSI in the sporty S4, which develops an impressive 333PS.
The wide range of drivetrains is typical of Audi. A six-speed manual transmission is standard on the Saloon and Avant models with front-wheel drive; most variants offer continuously variable multitronic as an option. The quattro versions have either the manual transmission or the seven-speed S tronic on board. The A4 allroad quattro employs a manual transmission or S tronic with all engine versions.
A thermal management system shortens the warm-up phase of the manual transmission, among other things, and thereby reduces friction loss. All transmissions are distinguished by convenient and precise operation, high efficiency and a wide spread of gear ratios – the long ratios in the higher gears reduces fuel consumption, while the short ratios in the lower gears benefit the dynamics.
Quattro permanent all-wheel drive is standard on the A4 allroad quattro, and available in the Saloon and Avant from the 2.0 TDI with 177PS. The A4 family uses the self-locking centre differential here. In regular driving operation it primarily transmits the engine torque to the rear wheels in the ratio of 40 to 60. If necessary, redistribution occurs within the shortest possible time. The torque vectoring function supplements the work of the centre differential with finely incremented brake applications, to make handling even more precise and safer.
In the V6 quattro Audi offers the sport differential as a supplement, lending maximum precision and high traction to the A4 when cornering at the handling limits. The high-end component actively distributes the power between the rear wheels as required.
The chassis of the A4 offers sporty precision, high ride comfort and superior safety. The mounts of the rear suspension control arms and the characteristics of the shock absorbers have been even more finely tuned. Most of the components of the five-link front suspension and the trapezoidal-link rear suspension are made of aluminium.
Electromechanical power steering is new. The direct gear ratios convey precise road contact; slight brake applications counteract pulling to the side on unevenly slippery surfaces. The power steering requires no energy for straight-ahead motion, thereby reducing fuel consumption. This is equivalent to a reduction inemissions of up to 7 g/km.
SE Technik specification has became more comprehensive, and more cost effective. At the same time, a number of the most popular engines in the A4 range that can be paired with it have also made valuable power and efficiency gains.
Available for all A4 Saloon and Avant models equipped with a four-cylinder engine, the SE Technik specification takes the more familiar SE trim level as its foundation. To this, it has until now added Milano leather upholstery, hard disk-based MMI navigation plus, Audi Music Interface (AMI) iPod connection and the Audi parking system plus with front and rear visual and acoustic guidance. Now, it also brings an exterior upgrade to 18-inch, ten-spoke ‘exclusive design’ alloy wheels (from 17-inch five-spoke wheels), and includes metallic paint.
The newly enhanced option carries a revised premium of £1,000 – a reduction of £350 from the original price, despite the increase in equipment. As a result, the SE Technik option represents a customer saving of £3,025 compared with the cost of specifying the various items individually.
The underlying SE specification for the A4 is far from minimalist as well. It includes three-zone climate control, cruise control, a Bluetooth phone interface, the Audi Concert audio system incorporating digital radio reception linked to a 6.5-inch colour display, sensors for headlights, wipers and reverse parking and split/folding rear seats. Avant models also feature powered tailgate operation.
It is possible to combine SE Technik specification with a choice of three turbo charged petrol units and three TDI diesels in the A4 Saloon and Avant range. The petrol line-up includes 120PS and 170PS versions of the 1.8-litre TFSI, and the 2.0-litre TFSI, which has just received a power boost from 211PS to 225PS. Like the 1.8-litre TFSI 170PS, this unit has benefited from revisions which enable it to comply with forthcoming 2014 EU6 emissions limits.
The A4 2.0 TFSI quattro S tronic which uses the upgraded 2.0-litre engine has a slightly reduced 0-62mph acceleration time of 6.4 seconds, down from 6.5, and a top speed increase from 152mph to an electronically limited 155mph. And despite the upturn, its CO2 output falls from 159g/km to 155g/km and its combined fuel economy is boosted from 40.4mpg to 42.2mpg.
Three versions of the perennially popular 2.0-litre TDI engine are available for diesel devotees Â– the 143PS unit has just been boosted to 150PS, and is topped and tailed by 136PS and 177PS options, the former powering the acutely economy focused A4 2.0 TDIe. To avoid impacting on this versionÂ’s optimal efficiency, SE Technik models equipped with this particular engine will feature 17-inch alloy wheels with low rolling resistance tyres.
SE Technik specification includes (in addition to SE):
- Milano leather upholstery
- HDD navigation
- Audi Music Interface
- Audi Parking Plus
- 18-inch 10-spoke design alloy wheels (new for 2014 MY, but excluding 2.0-litre TDIe engine)
- Metallic paint (new for 2014 MY)
Audi A4 TDI Ultra launched
Although it shares its 163PS output with the more powerful of the two TDIe engines, the unit powering the latest ultra models is a completely new development engineered for even leaner burning with no impact on performance.
Peak power arrives 1,200rpm earlier at 3,000rpm in the new ultra engine, and maximum torque increases from 380Nm to 400Nm and is available over a wider spread from 1,750rpm to 2,750rpm. Acceleration from rest to 62mph in the exclusively six-speed manual-equipped A4 TDI Ultra is very slightly improved at 8.3 seconds and top speed holds firm at 140mph.
Up to 56.5mpg is possible according to the combined cycle test, delivered with CO2emissions of just 109g/km. Ultra badging at the rear discreetly marks out the A4 Ultra and it can be upgraded to SE Technik specification. A4 SE equipment includes 17-inch alloy wheels, an Audi Concert CD audio system incorporating DAB digital radio and linked to a 6.5-inch colour monitor, light and rain sensors, rear parking sensors and electronic climate control. A5 SE models also feature Milano leather upholstery.
SE Technik specification for the A4 adds Milano leather upholstery, along with additional features such as hard disk-based MMI Navigation plus, Audi Music Interface (AMI) iPod connection and the Audi Parking System Plus with front and rear sensors.
All A4 ultra models are equipped as standard with lowered sports suspension to reduce drag and maximise economy, and for the same reason the 18-inch alloy wheels normally included as part of the SE Technik upgrade for A4 models are omitted.