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• DPF Q&A -- sheds some light 1 Aug 2009 (Forum)
  I found this Q&A buried on a Vauxhall forum, it's from a service training guide for their latest-generation DPF equipped cars. Obviously the details will differ a little with other manufacturers' DPF implementations, but it does give a good insight into the conditions needed to get typical
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  Is my Fiat 500 Multijet suffering from a DPF fault? 21 Dec 2013 (Ask HJ)
  I purchased my Fiat 500 diesel Multijet in April this year. It's about five years old. According to the service history, the oil was changed in October...
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  Buying a Volvo XC90 - petrol or diesel? 19 Nov 2013 (Ask HJ)
  I am looking to buy a second hand Volvo XC90 Geartronic for local private use and to stand in for my business van when road conditions in the winter call...
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  Is the 1.6-litre Ford Focus turbo petrol a solution to the DPF and DMF problems of diesel cars? 18 Feb 2012 (Ask HJ)
  Your warnings on the failure costs of turbos, DMFs and DPFs mean that the very features that reduce fuel usage and emissions raise the risks of high repair...
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  Diesel Particulate Filters 14 Mar 2011 (Ask HJ)
  Despite reading your column each week I am stiil confused and getting conflicting advice. Should I buy petrol or diesel engine? I drive 9000 miles a...
• Mazda 6 2.2d Sport Nav 2016 - What to do? P2118 & DPF Malfunction 5 Jul 2024 (Forum)
  Yesterday when driving locally a message came up saying DPF Soot accumulation too high. We decided to do a 22-mile run on the motorway at 3,200 revs to try and burn it off. We only did about 2 miles before the P2118 error code came up, followed straight away by a 'DPF Malfunction' message. We
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  How do I check the EU exhaust rating of a car I want to buy? 11 Jul 2019 (Ask HJ)
  I have been offered a second-hand Volvo V90. The dealer says they cannot confirm its EU exhaust rating but has given me its VIN to check. How do I do that?...
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  which used diesel will suit me 6 May 2016 (Ask HJ)
  hi i do about 18,000 miles a year, but this may go up even further, so i am looking at a diesel i am after one that's reliable and cheap to run,...
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  Buying a diesel Qashqai - can I use it for short trips? 26 Nov 2013 (Ask HJ)
  I'm debating buying a 2010 Nissan Qashqai 1.5 DCi. I do a few odd trips across the country and want something comfortable, but dislike estates. However,...
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  Is a seven mile journey enough to allow my BMW 320d's DPF to regenerate? 26 Oct 2013 (Ask HJ)
  I drive a BMW 320d and was interested in your response to the email from EJ, Market Rasen concerning the burning off of diesel particulates. What do you...
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  Buying Bangernomics diesel 9 Jan 2013 (Ask HJ)
  Due to my high mileage covering 27,000 miles in 18 months in my petrol Ford Focus, I'm now looking to buy a diesel to replace it. However, I've previously...
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  Is my Citroen Picasso supposed to be so slow? 11 Sep 2010 (Ask HJ)
  I've bought a Citroen Picasso 1.6HDI for taxi driving. I've been driving it for a week now and noticed that it seems to lack power when accelerating. I...
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  Is it wise to buy a Jaguar X-Type diesel estate with a DPF? 24 Jul 2010 (Ask HJ)
  I would like to buy a used Jaguar X-Type 2.0-litre diesel estate with full leather seats. Do I need to worry about the expense to replace clogged particulate...
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  Will petrol particulate filters suffer with the same problems as DPFs? 10 Aug 2018 (Ask HJ)
  One of the problems with diesel engines for low mileage users is the clogging of DPFs. Petrol particulate filters now seem to be appearing, so are they...
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  Are VAG diesels built using "Manifold in Head" tech? 29 Apr 2015 (Ask HJ)
  Is it true that some VAG diesels have been built using the "Manifold in Head" tech that other makes (Renault) have used to good effect in reducing DPF...
• Toyota Yaris - DPF in 2 year old Yaris 2 Nov 2014 (Forum)
  My engine mangement light came on back in June, I took it into a Toyota dealer and they said it was the DPF and even may need a new engine. I didn't, but they did force a regeneration. At the time they also did my annual service. A few weeks later my service light started flashing. I looked
• ford focus estate 2.0tdi powershift - DPF advice 18 Aug 2014 (Forum)
  history.  I have just noticed it is the dpf model and based on the various info I have now seen on the internet I am Worried that because of the age of the vehicle (5 years) and the low mileage the dpf could be at risk of future problems. I will be using for long journeys at speed but can
• Citroen / Peugeot - DPF Issues 3 Jan 2014 (Forum)
  Hi, I am interested in finding out more about DPF issues with modern diesel engines. I have had 2 Citroen C4 Grand Picasso's (2008 and 2009) and now have  Peugeit 5008 (2013) all diesels and all driven around town most of the time with very few long runs
• Mazda 6 - Biodiesel Question 25 Dec 2013 (Forum)
  of damage to the car just like if it were filled up with Petrol?; b)immediate damage to the DPF or will it damage over a long time?; c) greater possibilites that the oil levels can rise due to the DPF not being able to regenerate because of the amount of biodiesel content?; d) a warning
• Any - DPF - What is all the fuss about ? 19 Feb 2013 (Forum)
  Can someone outline in simple terms what the problem is with DPF equipped cars. and under what circumstances they are likely to cause problems. I have a 2009 Passat CC 2.0 TDI, just done 60 K and now out of warranty and I've never had any bother at all. it does