Ask Honest John

Most recently answered dpf questions
Despite driving in a 'DPF friendly' way my 2010 RAV4 SR150 auto has a blocked DPF at 67000 miles which won't regenerate. Toyota won't cover this want £1800 approx to replace. Is it worth trying Terraclean...
I'm thinking about getting an S Max as a family car but Petrol models appear to be thin on the ground. I'm apprehensive about getting a diesel as most of our journeys are short ones around town. However,...
I am thinking of buying a Nissan Qashqai diesel for towing my 1300kg caravan, but have concerns about the DPF. Would the 1.2 petrol engine be powerful enough or should I go with the 1.6 diesel?
I live in Jersey, and our Discovery 2 TD5 Auto is about to die. I am looking to replace it with similar, but a bit smaller, with a £20k budget. The car will do around 7000 miles a year, which includes...
I'm thinking of buying a Mazda 6 (2011 model). I love the car but have heard of a few DPF issues with this car. Did this model get improvements to the DPF or is there anything I should look for?
I'm thinking of buying a 12 month old Audi A3 1.6 TDI. Does this car come fitted with the EA889 manifold? Why is this manifold so important when it comes to avoiding DPF faults?
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 problems?
I want to buy a new Kia Soul diesel, but I will only cover 6000 miles a year. If the DPF gives problems will the seven-year warranty cover it? Or would I be better off buying the petrol version?
I'm planning to buy an Audi A3 from the year 2012 onwards. I'd like a diesel, but can't decide between the 1.6TDI or the 2.0TDI engine. Which is more economical? Does this two engine have fitted DPF on...
My Volvo V50 (2006) keeps slowing down on long stretches of the motorway, after an hour or so, and displays a sign saying "Engine System Service Required" on the dashboard. No garage, mechanic or anyone...