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  Is there a defeat device in my Porsche Macan as with the Volkswagen EA189 engine? 17 May 2017 (Ask HJ)
  I have a 2014 Porsche Macan 3.0-litre diesel, bought new. It recorded 42mpg or better on a long run and 39mpg average on short urban runs. Porsche wrote...
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  Why is my Peugeot 208 using so much coolant? 7 Dec 2016 (Ask HJ)
  My Peugeot 208 1.4 petrol runs at around 96-98 degrees and the engine is using a lot of coolant every week. I've called out the AA, but they say this operating...
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  What's the best method for running-in a new EcoBoost? 23 Nov 2016 (Ask HJ)
  I'm due to collect my new Ford with the EcoBoost petrol engine. Do new cars still have a running-in period? Is there anything to be careful of with this...
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  Why did our Volkswagen Transporter lock itself shut with the engine running? 5 May 2012 (Ask HJ)
  My son owns a 2005 Volkswagen Transporter T28 TDI. On a Friday morning at a temperature of -8 degrees centigrade, he started up to warm the interior and...
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  Dedicated foreigner to fashion 5 Oct 2011 (Ask HJ)
  As a retired former senior executive in the car industry, the most refreshing aspect of your column is the even-handed way you dispense advice on customer...
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  Consumed by consumer 30 Jul 2011 (Ask HJ)
  How meaningful are the published Official Fuel Consumption Figures? A friend of mine has a 9-month-old Vauxhall Astra. He has run three tests, over a distance...
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  Can you recommend a good replacement for our AWD Fiat Sedici? 12 May 2011 (Ask HJ)
  My wife has a 5-year-old 1.6 petrol engined Fiat Sedici with 30,000 miles which has been an excellent buy with absolutely no running problems, just regular...
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  How should I drive my Citroen C5 diesel in order to avoid potential DPF problems? 5 Sep 2010 (Ask HJ)
  A couple of months ago, I bought a secondhand 2007 Citroen C5 2.0 HDi auto. This is obviously a rep's car, given the 72,000 miles on the clock. Again,...
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  Hyped and seek 10 Apr 2010 (Ask HJ)
  I am thinking of buying a 2nd hand Toyota Prius but almost all the driving I do is on the motoway - usually between London and Wales. I have been driving...
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  Filter tip - DPF regeneration 15 Jan 2010 (Ask HJ)
  I've run a BMW E60 525SE petrol auto from new. It's 6 years old and I intend to change it for a new F10 5-Series. There are compelling paper reasons for...
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  Stop starve technology 5 Dec 2009 (Ask HJ)
  I am really interested in the Vauxhall/Opel Ampera. The benefits seem inescapable. However, given a scenario where the car is used on the daily commute...
• Renault Megane (1996 - 1998) - 1996 2.0 8v: running hot can't find a solution 13 Oct 2008 (Forum)
  Evening folks, I've got a '96 2.0 8v megane that has recently started running hot. out of 6 bars it always used to run at the 1st bar, rising to the second if stuck in traffic before returning to the first bar once progress is resumed. earlier in the week I noticed it was running at the third bar
• Any - Still Running 29 Mar 2020 (Forum)
  I am posting this to show that this post is still active, as stated people have other priorities, also, as the country is on lockdown people are for the...
• Vw golf tdi - Fuel problem 4 Feb 2015 (Forum)
  Car runs fine 10/15 miles then cuts out once you slacking 3 screws on filter housing lift it up let it draw in some air it runs ok again for same as ?
• Golf GTi 16V probs 24 Jun 2005 (Forum)
  My 1989 Golf GTi 16v has started to run on three cylinders when ticking over. It runs fine at over 1200 rpm and goes well but I'd like it to tick over properly. Any ideas? Thanks
• peugeot 306 dt 1997 black smoke 9 Dec 2004 (Forum)
  The car appears to struggle to run and blows out clouds of black smoke, could it be the egr valve or turbo or would the car run even if these were faulty, or is it more likely to be the timing or fuelling?
• Renault Clio - Daytime running light and MOT 1 Nov 2024 (Forum)
  My car was first registered in Jan 2017 and after the last service in August i was told that the passenger side daylight running light wasn't working and it will be a MOT Fail when it gets a MOT (This was at ATS) I have just been to the local Garage who did my last MOT to ask
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  Are run flat tyres best for dealing with pot holes? 23 Jan 2024 (Ask HJ)
  I read with interest your reply to the reader who enquired about best tyres for potholes. My BMW 320i has 225/45R18 which are runflats. I have always assumed...
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  Do I need to let the engine idle after a long journey? 16 Dec 2020 (Ask HJ)
  I have a Kia Rio that has a turbocharged engine. I was always told that after a long journey you must keep the engine running for a minute or two (in order...
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  Should I keep or sell my high mileage 2007 Renault Kangoo Van? 6 Mar 2017 (Ask HJ)
  I've got a petrol 2007 Renault Kangoo Van that's done 150,000 miles. A little battered, but in good working order. My dilemma is: selling it for what it...