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Petrol or diesel? 26 Apr 2013 (Ask HJ)
My parents want to replace their ageing (2003) Mercedes C220 CDi. They cover 12,000 miles a year and are getting different opinions from every dealer... -
I do 20,000 motorway miles a year - should I stick with diesel or switch to hybrid? 14 Mar 2019 (Ask HJ)
I do 22,000 miles per year, mostly motorway. I’m a 40 per cent tax payer, who’s current lease of a 2016 Skoda superb 1.6 TDI is coming to an end. A hybrid... -
Does my Peugeot Expert diesel van need a new fuel pump? 13 Sep 2010 (Ask HJ)
I have a Peugeot Expert diesel, 2005 model. I've just had the key programmed by Peugeot. They said the key wasn't programmed, but I think differently.... -
What evidence do you use to recommend premium fuels? 13 Oct 2012 (Ask HJ)
What evidence enables you to recommend certain fuels to your readers who are worried about supermarket fuels? -
Are diesel engines really that bad? 15 Mar 2015 (Ask HJ)
Geoffrey Lean in the Telegraph blames diesel cars for pollution, forgetting that almost ALL commercial transport, on sea and land, runs on oil fuel. Modern... -
Why are Europeans encouraged to buy diesel cars when we are told to get rid of ours? 26 Jun 2017 (Ask HJ)
Why are Europeans encouraged to buy diesel cars with cheaper priced fuel when we are told to get rid of ours? -
At what annual mileage should drivers consider diesel vehicles? 10 Aug 2010 (Ask HJ)
In last Saturday's paper, you advised someone who does 10,000 miles a year that 'You don't do enough miles for a diesel.' I'd appreciate your opinion as... -
Which Polo-sized car offers better fuel economy? 19 May 2012 (Ask HJ)
My wife currently runs a 2004 Volkswagen Polo 1.4 Twist. Her annual mileage is about 3000 - 4000 made up of fairly short journeys of up to 20 miles. She... -
Should both petrol and diesel turbo engines be idled after use? 16 Jun 2012 (Ask HJ)
Further to your advice on turbo cooling by idling the engine for some time after use, is the advice equally true for diesel and petrol engines? I have... -
I'm very pleased with my new C-Max diesel, which drives superbly. 2 May 2011 (Ask HJ)
I have recently changed to a new C-Max 5-seat 1.6 diesel. This is my first diesel and I am grateful for several tips via your column, particularly the... -
Downsizing 18 Apr 2011 (Ask HJ)
Due to poor fuel economy and rising fuel costs I'm changing my Suzuki Grand Vitara diesel (06 plate). My budget is around £11-£12K for used car. I... -
Fuel consumption suddenly dropped? 4 Apr 2013 (Ask HJ)
Last year my Jaguar X-Type diesel's fuel consumption suddenly dropped from 52 to 44mpg. I have put two lots of injector cleaner in the tank; changed... -
Mazda 6 lacks power on cold mornings 8 Nov 2016 (Ask HJ)
I have a Mazda 6 diesel (2006 model) that lacks power when cold. In fact, in the mornings, it is difficult to get it past 45mph, although it works fine... -
Which premium diesel fuels are the best for which types of driving? 2 Feb 2013 (Ask HJ)
I have been reading with interest your advice on diesels having just taken delivery of my new company car a Mercedes-Benz E350 CDI. Like all diesels, it... -
Gastric ring 23 Jun 2011 (Ask HJ)
I have recently purchased, for a bargain price, a Ford F350 American pick-up truck. It has a 7.3 litre turbocharged diesel engine. I use the truck for... -
Is it common for misfuelling inhibitors to prevent filling with the correct fuel? 23 Jun 2010 (Ask HJ)
My 2009 diesel Ford Mondeo is fitted with a misfuelling inhibitor. I called in at a recently-refurbished Esso station in Stoke-on-Trent at the weekend... -
Winter driving - car won't start 12 Nov 2013 (Ask HJ)
I have a 13 year old Audi A6 Allroad, which I use in the Alps in the winter. However, I’ve noticed that the car runs very poorly in cold weather and sometimes... -
Is this fuel economy normal 7 Sep 2012 (Ask HJ)
I bought a 2006 Mondeo TDCI. It's running perfectly and has just had a major service. I'm only achieving just over 120 miles per 1/4 tank and thats on... -
Used cars with low fuel consumption 6 May 2011 (Ask HJ)
We have owned a 1989 Volvo 740 estate from new and now want to buy a relatively new used car (or a very low priced new car) to replace it. The new car... -
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...
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