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  Why is my car pinking under acceleration? 6 Jul 2019 (Ask HJ)
  My 1999 Toyota MR2 seems to be rattling/pinking under acceleration. I’ve checked the timing and its spot on at 10’ BTDC. Can you suggest any other issues...
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  What small car is suitable for my ageing back? 13 Jun 2019 (Ask HJ)
  I need to replace my Ford Fusion to help my ageing back. I am 6ft2 and have a long back. My budget may stretch to £5k, but like all pensioners, I want...
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  What sort of diesel regeneration does my car have? 10 Jun 2019 (Ask HJ)
  I have a 2013 Mercedes E250. What sort of diesel regeneration does it have? I drive 50 miles or more on main roads at least weekly.
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  Are there problems with the Honda HR-V 1.5 Turbo engine? 20 Mar 2019 (Ask HJ)
  I am thinking of buying the new Honda HR-V having waited for them to put a decent engine under the bonnet. I have read many reports of full dilution issues...
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  What's the most economical small van I can get? 25 Oct 2018 (Ask HJ)
  I'm looking to buy a van with a floor load space length of at least 170 cm and my budget is around £4000 - £5000. What is the most economical van I can...
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  Is an LPG converted motorhome a good used buy? 22 Oct 2018 (Ask HJ)
  I want to buy a motorhome second hand. Would you recommend an engine that runs on LPG rather than petrol or diesel?
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  I do 30,000 miles a year - what SUV do you suggest that's economical? 5 Oct 2018 (Ask HJ)
  I’m looking for an SUV to use mainly for work. I do about 30,000 miles a year with two trips per week over 200 miles but a 20 mile commute to Cambridge...
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  Is my Citroen Berlingo classified as a van or a car? 1 Jun 2018 (Ask HJ)
  I have a Citroen Berlingo and need to find out if it is a car derived van or a van based on a car? Can you help?
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  If you could buy any car, what would you choose? 6 Apr 2018 (Ask HJ)
  I'm a field service engineer and I'm looking for a new car. If you could buy any car (estate, saloon or hatchback), what would you choose? It would have...
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  I read that engine oil is contaminated by the DPF in 4x4s - is this the case with all diesel cars? 13 Feb 2018 (Ask HJ)
  I read in a recent 4x4 review that the engine oil is quickly contaminated by the DPF. Is this the case on all diesel engines with a DPF, and can it affect...
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  Why does my radio cut out after a few minutes with the engine off? 30 Oct 2017 (Ask HJ)
  I have a Ford Focus. The manual states that with the engine off, I can listen to the radio for one hour. I can't, it cuts out after a few minutes. This...
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  What £5000 cars can realistically get 60mpg? 27 Oct 2017 (Ask HJ)
  I need to change cars as I now travel further to work each day. I'm looking for something that will do 60mpg, what do you recommend for my £5000 budget?
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  Why does my Real MPG change from summer to winter? 24 Oct 2017 (Ask HJ)
  Why do summer and winter mpg figures vary?
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  Why does my Ford Focus 1.6 TDCi keep cutting out suddenly while driving? 22 Mar 2017 (Ask HJ)
  My Ford Focus 1.6 TDCi runs fine for 35 - 40 miles, then cuts out as if the ignition was turned off. When I stop and turn off the ignition and then restart...
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  How do I fix the intermittent display fault in my 2004 Ford Focus? 6 Mar 2017 (Ask HJ)
  My Ford Focus 1.6 has done 88,000 miles. It kept showing an intermittent display fault with the odometer, speedometer, fuel gauge and temperature gauge...
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  Why is there a crackdown on diesel cars when petrol emits just as much CO2 emissions? 20 Feb 2017 (Ask HJ)
  Petrol gives 19.64lbs of CO2 per gallon, diesel 22.38lbs. For example, my diesel Volvo V70 does at least 40mpg, so 40 miles gives 22.38lbs. However, a...
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  Should I buy a diesel car on PCP for my high mileage commute? 10 Feb 2017 (Ask HJ)
  I do around 18,000 miles a year, of which 14,000 or so are business, for which I get 45p a mile. I need a new car; should I get a petrol or diesel for...
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  Information on the Volkswagen Sharan 2.0 emissions fix 3 Feb 2017 (Ask HJ)
  The 2014 Volkswagen Sharan 2.0 TDI fix is now available and the letter says there will be increased AdBlue use and 5 free refills will be offered. I phoned...
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  Is there anything, other than long runs, that can clean a DPF? 2 Feb 2017 (Ask HJ)
  What year were DPFs introduced by Ford and Vauxhall. Also is there anything out there that can really clean them, apart from long drives?
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  Why is my friend's Audi A6 emitting excess smoke when idling? 6 Jan 2017 (Ask HJ)
  A friend's 2007 Audi A6 2.0 TDI had a DPF removed and deleted, as well as an EGR shut. It also had a remap done. From test drive, the vehicle begun emitting...