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Should I get a petrol or diesel engine for driving long distances? 11 May 2017 (Ask HJ)
What is the best petrol engine concerning resale value and longevity? I'm looking to get something used, about the size of the Skoda Yeti. I'll be driving... -
Why can it take days to notice that a vehicle has been filled with the wrong fuel? 17 Mar 2012 (Ask HJ)
With reference to DS Wellesbourne wondering why it took five days for misfuelling a diesel to manifest itself, it would be because of the petrol being... -
Is the 1.6-litre Ford Focus turbo petrol a solution to the DPF and DMF problems of diesel cars? 18 Feb 2012 (Ask HJ)
Your warnings on the failure costs of turbos, DMFs and DPFs mean that the very features that reduce fuel usage and emissions raise the risks of high repair... -
Someday smut 25 Jan 2010 (Ask HJ)
I thought you might be interested to hear about my DPF experience. I drive a 2010 VW Golf 2.0 TDI GT, which I love. The mileage to date is less than 3,000.... -
Why have all four injectors failed on my Volkswagen Golf? 15 Nov 2017 (Ask HJ)
I have a 2010 Volkswagen Golf and was told by a garage that the high pressure fuel pump had disintegrated and blocked the injectors. I was later told by... -
Why does my biodiesel Citroen Xantia stall first thing in the morning? 9 Sep 2010 (Ask HJ)
I am using a glow plug style vegetable oil pre-heater unit on a Citroen Xantia with a Bosch pump. My fuel mix is 80 per cent new vegetable oil and 20 per... -
Petrol in a diesel van - what should we do? 15 Jan 2014 (Ask HJ)
My son in-law put 1/4 of a tank of unleaded petrol in his Fiat diesel van before realising he had made an error and then filled up with the correct diesel... -
Diesel or petrol? 21 Jan 2010 (Ask HJ)
I would appreciate some advice regarding the annual running costs of diesel versus petrol. We have been running two diesel cars. My Audi A4 is 08 registered... -
Using premium fuel in my Volkswagen Passat has improved fuel economy and burns more cleanly. 10 Jun 2010 (Ask HJ)
For a while I had been sceptical about the benefits of using higher quality fuel opposed to cheaper supermarket grades. Now that I have been using Shell... -
Is swapping from petrol to diesel a good move? 25 Aug 2022 (Ask HJ)
I am on the cusp of trading in a 2016 TSI VolkswagenTiguan (Mk2) for a 2018 TDI Volkswagen Touareg (Mk3). Putting the cash differential to one side (the... -
Wanted - Diesel car for 90 mile commute 5 Nov 2012 (Ask HJ)
My daughter commutes 90 miles a day mostly on motorways. She currently has a 2007 Ford Fiesta 1.4DCI, and gets about 60mpg. She likes the Fiesta and the... -
How can I improve my Octavia's fuel economy? 27 Apr 2015 (Ask HJ)
I have a 2013 Skoda Octavia 2.0 diesel. However, while my old Octavia gave 65mpg, I find the new model to struggle to get past 50mpg. I understand... -
Which medium diesel 4x4 will give 40mpg or more? 21 Aug 2010 (Ask HJ)
We own a 1997 Subaru Legacy which is in need of replacement. We'd have another for its all-round ability, but the fuel consumption of the petrol models... -
Should I add injector cleaning fluid to my BMW 5 Series? 30 Oct 2014 (Ask HJ)
Should I add injector cleaning fluid to my 2007 BMW 525d diesel engine? -
Supermarket diesel 2 Nov 2011 (Ask HJ)
Does the problem with supermarket petrol also apply to diesel? And is there a particular fuel to look for? -
False economy? 21 Nov 2009 (Ask HJ)
I am hoping to swap my 54 plate 1.8 auto Almera for a new car that will be cheaper to run. I have looked at the Chevrolet Aveo and ruled that out due to... -
Getting good fuel economy - petrol or diesel? 14 Jan 2014 (Ask HJ)
Do you think the likes of the Suzuki Swift 1.2 which claims to do 57mpg, makes diesels less appealing if doing 15-18 thousand miles a year? -
Golf returning poor fuel economy - are the new tyres to blame? 11 Nov 2014 (Ask HJ)
I recently replaced old "Event" tyres with new Michelin ones on my wife's 2006 Volkswagen Golf diesel. On a regular round trip of 120 miles, her on-board... -
How do I know when the DPF on my car is regenerating? 3 Sep 2018 (Ask HJ)
I read a lot about diesel DPFs but how do I know when the fuel system is regenerating? I drive a Toyota RAV4 2.2-litre diesel. Nothing comes alight on... -
I successfully sued Tesco for not labelling fuel pumps properly. 28 Jul 2012 (Ask HJ)
I poured unleaded petrol into my diesel Hyundai iLoad van a few months ago at Tesco, but luckily realised before starting the engine. I looked at the pump...
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