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  Does the Citroen C3 have a DPF 16 Jan 2013 (Ask HJ)
  I'm looking at buying a Citroen C3 1.4 HDi 70 Airdream+ (August 2009 model). I have heard some real scare stories about DPFs costing an arm and a leg to...
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  Is there a way to cheaply maintain a DPF? 11 Nov 2018 (Ask HJ)
  I would be interested in your opinion about DPF problems and whether some mechanics and main dealers make a big deal out of problems that are otherwise...
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  DPF Filter problems Ford Kuga 25 Jan 2012 (Ask HJ)
  I do a 152 motorway miles every workday and I have a DPF filter light. The light comes on is then reset (for £40) ok for a bit comes on again (this time...
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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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  Will I have DPF trouble with a CX-5? 4 Jun 2013 (Ask HJ)
  I have ordered a Mazda CX5 2.2 Diesel this weekend, I have belatedly done some research on DPF problems - can you advise as if there is an on going issue...
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  Honda iDtec DPF problems 2 Jan 2013 (Ask HJ)
  I'm reading about quite a few DPF problems on the 2008 onward Honda Accord. Drivers seem to get a blocked DPF warning message and then even if they do...
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  Jaguar X-Type: does it have a dpf? 15 Oct 2012 (Ask HJ)
  I am looking to buy a Jaguar X-Type estate 2.2D automatic in either SE or Sovereign trim and I believe they are all fitted with DPFs. I commute 25 miles...
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  Are there any diesel cars which do not have DPFs or DMFs fitted? 14 Apr 2012 (Ask HJ)
  I have seen mentioned problems with dual mass flywheels and DPF filters. Are there any diesels that do not use DPF filters or have dual mass flywheel issues?...
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  Which 4x4s don't have a DPF? 5 Sep 2010 (Ask HJ)
  Where can I get a list of new 4x4 diesels that do not have a DPF fitted?
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  How can I fix my MINI's clogged DPF? 6 Oct 2014 (Ask HJ)
  I own a 2009 MINI Cooper D, which is suffering a bout of DPF issues. Within a few months of owning the car, the DPF light came on (regularly) and BMW performed...
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  Blocked DPF - what should I do? 13 Mar 2022 (Ask HJ)
  The diesel particulate filter (DPF) on my BMW 520D G30 is blocked, what should I do?
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  The DPF warning light is flashing on my Mazda 6 - does the particulate filter need cleaned or replaced? 4 Dec 2017 (Ask HJ)
  My Mazda 6 has a particulate filter warning light flashing, despite two hours on the motorway. The car has never done this in four years of ownership....
• Modern diesels and DPFs 4 Feb 2019 (Forum)
  Someone told me that recent diesel cars - especially VAG ones - have no issues with the DPF, and you can happily do no longer journeys and the DPF will be fine. Is this true? 
• Audi/VW - Identifying a DPF Diesel 1 Jun 2016 (Forum)
  Been told that the way to spot whether a VW/Audi has a DPF fitted (around the changeover period of 2007) is to look at the tail pipe. Non DPF has a curved down pipe fitted as OE. DPF has a straight pipe fitted. Is this correct or is there any other way of finding out ?
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  Do DPF cleaner additives work? 31 Dec 2024 (Ask HJ)
  Do DPF fuel additives work? If so which are the best?
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  Does my Volvo have a DPF? 11 Aug 2014 (Ask HJ)
  Does my 2004 Volvo V70 D5 automatic have a DPF?
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  Should I be worried about my car's DPF? 13 May 2014 (Ask HJ)
  I am becoming increasingly concerned about potential problems with my Ford Mondeo's DPF. My 2008 car is used on weekdays on a 12 mile commute. The route...
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  Does my Volkswagen have a DPF? 29 Oct 2013 (Ask HJ)
  I have recently moved from France to Guernsey and from reading your Daily Telegraph column am concerned about potential DPF problems due to low usage....
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  Dacia Duster - do they suffer DPF problems? 21 Oct 2013 (Ask HJ)
  My husband is thinking of buying a diesel Dacia Duster, but is hesitating because of the DPF - he is a mechanic so is aware of the problems they can cause....
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  Should I have the DPF removed from my Dacia Duster? 21 Sep 2013 (Ask HJ)
  I read your column with interest each week and you constantly reiterate the problems with DPF and short journeys. I recently purchased a Dacia Duster,...