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  Engine warning light on Mazda 3 27 Aug 2014 (Ask HJ)
  Seven months ago I bought a 2010 Mazda 3 diesel. It has 71,000 miles on the clock and is out of warranty. Yesterday, whilst driving down the motorway,...
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  qashqai plus 2 replacement 16 Apr 2014 (Ask HJ)
  We are considering whether to replace a 5 year old 2 litre petrol qashqai which has covered 34000 miles mainly on sub 4 mile trips around town. It is...
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  Why is my diesel Fiat 500 suffering repeated engine failures? 26 Jan 2013 (Ask HJ)
  I purchased a Fiat 500 1.3 Multijet 2 years ago. During that time the car has been in and out of the garage for diagnostics, reputedly due to engine management...
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  Particles of association 4 Sep 2010 (Ask HJ)
  I have a 2008 model Volvo V70 D5 SE, and I recently received a recall notice from Volvo regarding diesel fuel getting into the sump oil during a DPF regeneration...
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  Worser Gummage 5 Sep 2009 (Ask HJ)
  I have an Alfa Romeo 159 Sportback 1.9 JTDm 16v. Recently a warning message appeared stating "Pollution Filter Clogged". The garage tells me this happens...
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  Particle solution 22 Aug 2009 (Ask HJ)
  I am part of a group of five other people trying to deal with the same problem. We all have or have had 2007 Vauxhall Meriva 1.3 CDT and we have all suffered...
• Renault Clio - Poor MPG 28 Jul 2024 (Forum)
    On another note , Is the Red X DPF for use to to keep the filter clean or is it used if you have a blocked DPF as stated on the instructions. TBH We don't cover many miles a week and the car is only used for travelling to work which is a 12 mile round trip and we are lucky to cover 5000 miles a year, So the Engine doesn't really get time to get warmed up but after 7 years of owning the car, We have never really had many issues but i would like to increase the MPG.
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  Four year old Mazda 6 - keep or sell? 22 Feb 2015 (Ask HJ)
  I have a four year old (2011) Mazda 6 Sport (180) diesel tourer. I've had it from new, covering 126,000 miles and love the car. I've seen a 2012 reg "Venture"...
• Ford Kuga 2012 - ASDS Amonia Storage and Delivery Systems 3 Jun 2018 (Forum)
  Has any one found a company that can install retrofiting ASDS systems to Euro 5 DPF cars.
• Citroen DS5 - Diesel additives 25 Nov 2012 (Forum)
  Interested in Platinum Plus diesel additive to asssist soot clearance in the DPF. The Web provdes info about this additive but does not suggest a source. Can anyone provide a supplier's name please.
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  My car failed after 17,000 miles - is it fair for the dealer to reject liability because it wasn't serviced? 4 Dec 2017 (Ask HJ)
  I bought a new Mitsubishi Challenger L200 from a dealer in May 2015. The engine seized and the car was written off in October 2017, after only 17,000 miles....
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  Which SUV is best? 26 Feb 2015 (Ask HJ)
  I am looking at buying a new SUV. I do about 10,000 miles a year and my daily drive to work is 25 miles each way. I really like the Honda CR-V, but the...
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  Replacing a Fabia estate? 11 May 2013 (Ask HJ)
  I currently have Skoda Fabia Greenline estate from 2008. As we use the car just for school runs mostly and afterschool clubs, distances of under a mile...
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  DPF warning light - what do I do? 9 May 2013 (Ask HJ)
  I've owned a Suzuki Grand Vitara since Oct 2012 - It is now out of warranty. I live in the Yorkshire Dales and I'd had enough of getting stuck the wrong...
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  Our postal vans keep breaking down with DPF faults - do you have any comment? 16 Mar 2013 (Ask HJ)
  As a keen reader of your columns in the Saturday Telegraph, I am well aware of the pitfalls of operating a modern diesel for short journeys. Our local...
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  Diesel estate - what would you suggest? 8 Jan 2013 (Ask HJ)
  I need a reliable estate for commuting (about an hour each way - motorway and traffic) and weekend jaunts with bicycles etc. Budget is around £6k and...
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  Should I buy a petrol or a diesel? 15 Dec 2012 (Ask HJ)
  I have been driving a diesel-engined car for almost 10 years and, although I don't do high mileage any more, I am still potentially interested in staying...
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  Why is the oil level rising in my Honda Civic diesel? 17 Nov 2012 (Ask HJ)
  My Honda Civic 2.2 i-DTEC, which I bought last month with 5800 miles on the clock, appears to be making oil. I have done 700 miles and the level has...
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  Replacing a used Mondeo 20 Aug 2012 (Ask HJ)
  My 2005 Mondeo diesel is being passed to my son very soon. I was going to replace it with another year old car but my mileage has reduced. I was about...
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  Ford Focus fuel economy problems. 25 Jul 2012 (Ask HJ)
  I have a 2007 Focus 1.6 TDCI 110 DPF with 89,000miles. Got it eight months ago when it had 82,000 and was fantastic until recently when I noticed a drop...