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  Poor fuel economy in a Mazda 6? 10 Dec 2015 (Ask HJ)
  Three weeks ago I bought a Mazda 6 2013 sport nav estate. It's a 2.2 175PS diesel auto. Overall I am very happy with the car. However I am a bit concerned...
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  Audi A6 Avant blowing white smoke 29 Jul 2016 (Ask HJ)
  I recently bought a 2007 Audi A6 Avant 2.0 TDI. It had previously been sitting idle for a month or two, but drove fine on the trip home. However, after...
• Diesel - not so cheap ? 30 Sep 2003 (Forum)
  All the diesels costed in between £11.5 - 13k from on-line brokers, the 1.4 Corolla at just under £10K. The result - even with the superior fuel economy of the diesels, not one of them were actually cheaper to run, since even the A2 only saved £1K in 3 years - the others even less.
• Renault Clio - Poor MPG 28 Jul 2024 (Forum)
  We have a Clio 1.5 Diesel clio and normally we were getting 58MPG , After the car had a service in January and the MPG display was reset, We started to get 50 MPG , I then changed the fuel filter which increased the MPG to 52 and after a month i added some red X Diesel engine cleaner and some DPF Cleaner and took the car on the motorway and held the car at 3000 RPM and covered 50 miles, Since then i have increased the MPG to 54, So i am still missing out on 4MPG.
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  Oil level rise in BMW 3 Series 19 May 2014 (Ask HJ)
  My BMW 3 Series 320D 2008 (72,000 miles) has just shown an increase in the oil level over the maximum. This is on the car's computer and not the dipstick...
• Volvo XC60 - VOLVO CHARGES FOR FORD PARTS 22 Jan 2014 (Forum)
  However, after the inconvenience of a number of random refusals to start over the following weeks, the problem was isolated to the fuel pump assembly in the diesel tank. A replacement assembly is only obtainable from Volvo. Faced with no alternative, I purchased one from my local dealership, at a cost of £345.60. During the replacement process I saw that part of the original assembly was marked as a Ford part and the new assembly had a Ford format part number.
• KIA Ceed 2L diesel Sport 3 years old 33,000 miles - No accelerator - loss of power - engine stops 23 Sep 2012 (Forum)
    I’m unsure if it’s an engine management problem or a fuel starvation problem. Is it possible to test this to confirm. I wonder if it’s an engine management problem that they will fix it and say it was fuel line and charge me as that isn’t covered by the warranty.
• Vauxhall Astra G Diesel - Vauxhall Zafira 2.0 DTI ECU/Fuel Pump Problem Help 7 Oct 2010 (Forum)
  I've had to put a Astra down as the model for this post, but the vehicle I need help with is a Zafira! I've a friend who's recently bought a 2003 Zafira...
• Citroen Despatch (2007 - ) - 04 1.9 diesel poor running 5 Mar 2009 (Forum)
  I posted a previous question about non starting and had to resort to getting an auto electrician firm out to fix the problem after spending 2 hours outside my house on tuesday in the rain they decided to tow it to there garage where they claimed to have worked on it all day wednesday cutting some security device off the back of the diesel pump telling me on Wednesday eve that it also needed new glow plugs so it would run just right.Got it back today with £350.00 bill but it now has a different problem than before,it starts ok now so that problem seems to be fixed but it flattens out like you have run out of fuel at between 20/30 it is as if it is being starved of fuel temporarily then as you drive through it it springs back to life.
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  X-Trail error code 26 Apr 2011 (Ask HJ)
  I own a 2004 Nissan X-trail 2.2 diesel. Whilst I was driving the car suffered loss of power (limp mode). Diagnosis was done by a trustworthy local...
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  Company car replacement advice. 14 Mar 2010 (Ask HJ)
  My company car is due for replacement later this year and with fuel price increases due to continue I need a vehicle that is frugal. My annual mileage...
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  Breakeven point for petrol versus diesel? 28 Dec 2022 (Ask HJ)
  I am looking at the SEAT Ateca - either the 1.5 TSI DSG Or 1.6 TDI DSG. I have been doing up to 15,000 miles a year of mixed motoring. What would be the...
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  i30 or used Golf? 22 May 2012 (Ask HJ)
  I am weighing up whether to buy a 2nd hand (upto 2 year old) Golf 140 GT TDi (maybe Bluemotion Tech) or a new i30 1.6D 126hp Bluedrive (through Drive the...
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  Does my Volkswagen Passat DSG have a dual mass flywheel? 4 Jun 2011 (Ask HJ)
  I have a Volkswagen Passat diesel with DSG gearbox. I believe that you have suggested that there is less likelihood of damage to a DMF with an automatic...
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  How effective are LPG conversions on Range Rovers? 10 Mar 2011 (Ask HJ)
  I'm thinking of buying 1998 Range Rover 4.0L Dual Fuel. What questions should I ask and what things should I look out for? Are there any obvious problems...
• Volvo C30 (2006 - 2009) - Poor fuel economy. 2 Jun 2009 (Forum)
  I know I am not alone in this situation, I have read on this site alone, other people experiencing poor fuel economy from Volvo's 2.0 Ltr diesel engine. Volvo obviously have no conscience regarding their customers, especially when they publicize what a caring organisation they are with excellent after sales service and so, NO MORE VOLVOS' FOR ME!!!
• Petrol or Diesel for long term ownership 14 Feb 2014 (Forum)
  This is scary right enough, but the savings per year say for a C4Grand Picasso 1.6 diesel versus 1.6 petrol are about £419. Over ten years that's £4200 assuming a stable tax regime and fuel price ratio. Given that the massive diesel bug out mught not happen, isn't that a risk worth taking?
• "Payback" Mileage for secondhand Diesel 22 Nov 2006 (Forum)
  Does anyone have nay clues as to what the mileage payback would be ? Or at this price range is it worth anyone going to diesel ? I don't do a huge mileage, but am debating wether to buy a much older bigger petrol engined car, eg. (P) plate Subaru legacy , or to buy a 3 yr old modern diesel, woith hopefully equivalent performance, but which of course will be more expensive to purchase, but cheaper in fuel... eg 2003 current shape Avensis...
• Diesel servicing costs? 29 Dec 2004 (Forum)
  Audi TT (??) Key requirements are that it's an auto. Doing my spreadsheet calculations, it looks like diesel is the way to go (assuming 10mpg gap between diesel and petrol this equates to about a £500 saving pa in fuel costs) Question is, how can I quantify the difference in servicing costs between the 2 engine types?
• What was up with this Jaguar? 3 Oct 2007 (Forum)
  On the M40 this morning, I was passed by a newish XJ - 54, I think - that seemed to be trailing a little silvery cloud that wasn't spray rising from the wheels. As it disappeared, I noticed it was also leaving behind a strong whiff of diesel fuel. Anyone like to suggest what might have caused this - and what risk it might have posed to the Jaguar driver and the rest of us?