Which products have made it into the Honest John Kit gift guides for Christmas 2019? You'll be surprised... | No thanks
Ask a Question

Ask Honest John

Most recently answered dpf questions
Does active regeneration of the DPF happen automatically? And should I put additives into the fuel?
I’m considering buying a new Audi A6 next year, but I can’t make up my mind on which engine I should pick. I live in London and don’t do more than 6000 miles per year, I’d say 80% of which is city driving....
I do a lot of short journeys so is buying a new diesel a no no with having a DPF?
I'm looking to purchase an MPV for up to £7000. I currently own Citroen Xsara Picasso on a 54-plate, but the air conditioning no longer works and the heater has also stopped working. I am wondering what...
Are engine revs raised during DPF regeneration on a Nissan Qashqai?
After repeated short drives in a diesel does DPF regeneration make a noise and raise the engine rpm?
I had a DPF clean, sensor change, timing belt and service done at 86,000 miles on my 2012 Mazda 6. It had returned to the garage with the DPF light on at 98000 and for a service. However, I was told the...
I have a 2013 Mercedes E250. What sort of diesel regeneration does it have? I drive 50 miles or more on main roads at least weekly.
My work colleague has had problems with the DPF blocking up on his 2012 Mondeo. He has had the DPF removed and been told it is only illegal to remove the DPF on cars made in 2014 or later. Is this correct?
I owned an Evoque that had issues with the DPF. But when a diesel flags up that the DPF needs a regen, how long time or distance wise do you have to get it on a motorway/dual carriageway before the fuel...
 

Value my car