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  Mazda 6 diesel engine/system does not have DPF - good thing? 19 Jan 2016 (Ask HJ)
  I have been advised that the Mazda 6 diesel engine with SkyActive technology does not have a DPF and therefore avoids associated problems of other diesel...
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  DPF regeneration 29 Jun 2015 (Ask HJ)
  I have a 2015 CLS 350 CDI. My concern is the DPF having read your column for a while. Even at speeds beyond legal limits, with the nine speed gearbox,...
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  Can I remove the DPF from my car? 21 Dec 2013 (Ask HJ)
  Are DPFs a legal requirement? What do you think of ECU-Flash's DPF removal service, please?
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  BMW 5 Series DPF issues - what should I do? 21 Jan 2022 (Ask HJ)
  I have a 63 plate BMW 520D (F10)  Auto Efficient Dynamic version (Euro 6) As I drive a lot on motorway, the car has a high mileage, close to 180,000 miles....
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  My Mercedes-Benz has constant DPF issues that aren't due to my driving - what should I do? 24 Aug 2017 (Ask HJ)
  I brought a brand new Mercedes-Benz GLA 220d last September. Within three months of ownership my engine management light came on and the cars power was...
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  SEAT Leon DPF troubles - what should I do? 8 Sep 2016 (Ask HJ)
  I just bought a SEAT Leon diesel with 52k on the clock. Within 2 weeks the DPF yellow light came on. The car had a couple of hundred motorway miles in...
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  How can I fix DPF issues? 17 Jun 2024 (Ask HJ)
  My wife has a 2014 Mazda CX-5 with 80k on clock. We have Been advised by a garage that the DPF is more or less knackered and causing turbo failure. One...
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  Can a diesel van be used for short journeys? 24 Feb 2021 (Ask HJ)
  Can the Toyota Proace diesel van be used for short journeys? I believe it has a DPF.
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  What sort of speed and for how long do I need to be driving for the DPF to be working? 30 Sep 2018 (Ask HJ)
  What sort of speed and for how long do I need to be driving for the DPF on my diesel to be working?
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  Dashboard symbol for DPF regeneration? 28 Jul 2016 (Ask HJ)
  Is it possible to retro fit my 2011 Ford Kuga 2.0TDCI with a dashboard symbol that will warn me when the ECU triggers a DPF regeneration, so that I know...
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  DPF on a Skoda 1.9 TDI 1 Jun 2015 (Ask HJ)
  I am thinking of buying a 60 plate Skoda 1.9 TDI PD and can't get a definitive answer to the question of does this engine have a DPF fitted. I've asked...
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  Can I remove the DPF from my car? 24 Aug 2013 (Ask HJ)
  I have 2010 Ford Focus and am considering a DPF removal. The system itself hasn't given my any issues, but I am worried about future problems. Is this...
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  Looking for a late car without a DPF 16 Jan 2013 (Ask HJ)
  Currently looking to replace a 53 Plate Mazda 6 with a similar car. Have found a local Mazda 6 2.2d TS2 with 35,500 miles on clock. I do around 12,500-15,000...
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  BMW 1 Series DPF problems 30 Sep 2014 (Ask HJ)
  I have a BMW 1 series 118d (2009) and the DPF warning light has come on. It pops up after every four or so miles per journey. I haven't noticed any difference...
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  How do I know if my car is in a DPF regeneration cycle? 29 Dec 2018 (Ask HJ)
  How do I know if my car is in a DPF regeneration cycle? It would appear that the engine should not be switched of while this process is taking place but...
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  How do taxi firms get around DPF problems? 30 Aug 2016 (Ask HJ)
  I'm considering purchasing a used Renault Trafic, although my question is about DPFs in general. So to start regeneration you should be driving motorway...
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  Should I buy a car if the DPF light is on? 6 Nov 2014 (Ask HJ)
  I am considering purchasing a 2005 Volvo V70 2.4 D S for about £5000. The dealer allowed me to take the car to my mechanic to give it the once over and...
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  DPF problems - on all cars? 25 May 2013 (Ask HJ)
  You often point out the problems of failing DPFs on higher mileage diesels, especially in Volkswagen models. Does the same apply across all manufacturers...
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  How to fix a 307's worn our DPF? 28 Jan 2013 (Ask HJ)
  I have a Peugeot 307 SW HDI, bought new, 2002 or 2003 (not ex fleet!). 83,000 miles. I know the DPF needs dealing with but can a local service centre clean...
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  DPF replacement - what needs to be done? 20 Oct 2011 (Ask HJ)
  I'm having the DPF replaced on my 2005 Ford Focus 1.6TDCI as I have a fault saying that the DPF has reached its maximum regenerations. I'm having it...