Review: Audi A6 Avant (2005 – 2011)

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Stunning looking and practical executive estate. At its best with quattro 4WD and the excellent 3.0 TDI engine.

Back seat not comfortable for three across.

Audi A6 Avant (2005 – 2011): At A Glance

The Audi A6 Avant of 2005 is a big car, longer than the saloon and 4mm higher. It's also very beautiful, both sleek and perfectly proportioned, and that shape brings the added benefit of uncannily low wind noise.

Crucially, the roof is higher over the heads of rear seat passengers and comfortably accommodates three. The luggage area is long, and wide; more than a metre even between the rear wheelarches and 1.2 meters right at the back, which is handy for golf clubs. Seats up, there is 565 litres of loadspace to window level; seats down 1,660 litres to the roof.


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What does a Audi A6 Avant (2005 – 2011) cost?

List Price from £39,705
Buy new from £55
Contract hire from £329.38 per month

Audi A6 Avant (2005 – 2011): What's It Like Inside?

Length 4927–4934 mm
Width 1855–1862 mm
Height 1463–1519 mm
Wheelbase 2833–2843 mm

Full specifications

Access is via an electric lifting tailgate like the Honda Accord Tourers and the Mercedes E-Class estates. This can be set to open to various heights to suit opening it in a garage with restricted headroom. There is a standard, versatile rail, bar and strap system for neatly restraining luggage, plus a load net, and a protective flap that folds out over the rear bumper to protect it when loading and unloading. Under the floor you have the option of a full-size spare wheel, or a standard plastic well for things like muddy Wellingtons.

Child seats that fit a Audi A6 Avant (2005 – 2011)

Our unique Car Seat Chooser shows you which child car seats will fit this car and which seat positions that they will fit, so that you don't have to check every car seat manufacturer's website for compatibility.

Which car seat will suit you?

What's the Audi A6 Avant (2005 – 2011) like to drive?

Here I get to drive the 2.7 TDI front-drive 6-speed manual Avants, the 3.2 V6 petrol front-drive 6-speed manual Avant, a 3.2 V6 petrol front-drive 7-speed multitronic Avant, and a 2.4 V6 petrol front-drive 7-speed multitronic Avant. It would have been nice to complete the picture with a 2.0 TDI 140 multitronic and a 2.7 TDI multitronic, but none were available on the day.

Air suspension with variable ride height (developed on the old Allroad) is optional. So are extra bright LED tail lights (that never pop a bulb). And optional radar adaptive cruise control that allows you not only to set a cruising speed but also to set the minimum distance the car can be behind another vehicle. If the system senses you getting too close anyway, it automatically brings the brake pads closer to the discs so you can brake nanoseconds more quickly if necessary. Yet another innovation is a trailer stabilisation system that automatically helps get car and trailer back into shape if the trailer begins to swing. All have the same automatic parking brake as A6 saloons as standard. Pull a little flap switch to apply the brakes, then either just touch the footbrake or flip the flap to drive off again.

So on to driving impressions. ‘Autocar' rated the new 2.7 TDI very highly and it's certainly an impressive car. Cheaper than the quattro-tiptronic-only 3.0V6 TDI and available with either a 6-speed manual or 7-ratio multitronic CVT. The 6-speed manual gives a top gear speed of about 32mph per 1,000rpm, about the same as the Ford Focus 1.6 TDCI 5-speed and around 3mph lower than Ford/PSA 2.0 TDCI 6-speeders.

At first, the steering feels over-light, but stiffens up as you drive. There's a bit of understeer if you press on, though you need to be pushing fairly high speeds for the corner to encounter it. The disappointment is the clunkiness of the cable gearshift.

This varied from car to car (I tried two 2.7 V6 TDIs) and was a lot worse in the 3.2V6 petrol 6-speed I drove next. The engine has a wonderful howl and is a pleasure to listen to. But the shift from 2nd to 3rd on that particular car was diabolical.

The 7-ratio paddleshift Multitronic is a far better bet, allowing tidy downshifts while braking into corners, and powering out cleanly whether you are working the box manually or leaving it to its own devices. That's the beauty of the seven ratios. Unlike torque converter automatic 4 or 5 speeders, you're never stuck slurring away between inappropriate ratios or downchanging halfway round a bend. You're always in the right gear. As described before in the 2005 A4 road test, this engine and transmission is a formidably quick combination, but, so far, it's not in the UK A6 line-up.

No problem, though. The nice surprise of the day was the 2.4 V6 petrol multitronic, because in this combination the 7-speed box helps you make the most of every horsepower the engine has. So, far from feeling the poor relation of the 3.2, you can actually enjoy a less aggressive, more satisfying drive. And that's without quattro four-wheel-drive, or the S line sports suspension.

So, more stunningly good A6s. Not a duffer amongst them. The only Achilles heel is the lousy gearchange of some of the 6-speed manuals, which I guess Audi will attend to on production cars.

Engine MPG 0-62 CO2
2.0 FSI 35 mpg 8.7 s 192 g/km
2.0 TDI 46–49 mpg 9.2–10.5 s 152–162 g/km
2.0 TDI multitronic 48 mpg 9.2 s 154 g/km
2.0 TDIe 53 mpg 10.7 s 139 g/km
2.0 TDIe multitronic 48 mpg 10.2 s 155 g/km
2.0 TFSI multitronic 36 mpg 8.8 s 181 g/km
2.0T FSI 38 mpg 8.5 s 174 g/km
2.4 29 mpg 9.2 s 233 g/km
2.4 quattro 26 mpg 9.4 s 259 g/km
2.7 TDI 40–46 mpg 8.2–8.3 s 164–189 g/km
2.7 TDI multitronic 44 mpg 8.2 s 172 g/km
2.7 TDI quattro 40 mpg 8.4 s 189 g/km
2.8 FSI 32–33 mpg 7.6–8.2 s 199–209 g/km
2.8 FSI quattro 31 mpg 7.9 s 214 g/km
3.0 TDI quattro 35–42 mpg 6.8–7.1 s 179–215 g/km
3.0 TDI quattro tiptronic 40 mpg 7.0 s 189 g/km
3.0 TFSI quattro 30 mpg 6.1 s 223 g/km
3.2 FSI 26 mpg 7.2 s 262 g/km
3.2 FSI quattro 26 mpg 7.0 s 257 g/km

Real MPG average for a Audi A6 Avant (2005 – 2011)

Real MPG was created following thousands of readers telling us that their cars could not match the official figures.

Real MPG gives real world data from drivers like you to show how much fuel a vehicle really uses.

Average performance


Real MPG

22–56 mpg

MPGs submitted


Diesel or petrol? If you're unsure whether to go for a petrol or diesel (or even an electric model if it's available), then you need our Petrol or Diesel? calculator. It does the maths on petrols, diesels and electric cars to show which is best suited to you.

What have we been asked about the Audi A6 Avant (2005 – 2011)?

Every day we're asked hundreds of questions from car buyers and owners through Ask Honest John. Our team of experts, including the nation's favourite motoring agony uncle - Honest John himself - answer queries and conudrums ranging from what car to buy to how to care for it as an owner. If you could do with a spot of friendly advice before buying you're next car, get in touch and we'll do what we can to help.

Ask HJ

Petrol estate cars - which is the most economical?

I am about to replace my 2009 Audi A6 Avant 2.0 TDI. I want to buy another (used) estate car, but move away from diesel. Any suggestions?
Maybe a Peugeot 308 1.2 Puretech 130 SW. Has 230Nm torque so no slouch. I'm getting 50mpg.
Answered by Honest John
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What do owners think?

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  • 5 star 17%
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  • 1 star 33%

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