Ask Honest John

Most recently answered diesel particulate filter questions
When were particulate filters introduced? Does it vary acceding to Manufacturer?
My immediate rural location requires a 4X4 to cope with narrow lanes, muddy verges, getting out of the way of other vehicles and winter conditions. My current car is a 2007 Skoda Octavia 4X4 estate with...
Are there any repurcussions on MOT renewal, and exhaut emmissions if I have my DPF removed and replaced with a SS pipe then remap. For how long will this procedure be effective? I have been quoted £599...
I'm thinking of buying a Fiat Panda 1.3 multijet. Do they have either a DMF or DPF?
Given all you have said about diesels/particulate filters etc and their expense - if driving mostly short haul, stop start etc - what is a VW Touran 1.6 auto deisel like?
I have a 2010 Audi A3 2.0TDI Sport with a low mileage (15000). I bought it from an Audi dealer just over one year ago. Earlier this year the engine management system warning light came on. The RAC came...
Have had many problems after the injector replacement under recall - DPF light constantly on and car often at the garage for regeneration - and then the DPF light comes back on after driving a few miles....
Would you foresee any likely problems with the Dacia Duster dCi 110 4x2 diesel engine, e.g. Particulate filter, DMF and exhaust gas recirculation valves? The vehicle received positive reviews from James...
We wonder if we should downsize from our 54 reg Avensis diesel to a 1.4 Jazz to carry our golf clubs & electric trollies. Does our Avensis have the dreaded dual mass fly wheel & troublesome particulate...
We are considering buying a used Peugeot 4007 2.2 HDi 156 SE 5dr - 74,500 miles, 07 plate, full Peugeot service history, local car. Recently serviced, has a few extras - parking sensors and leather, and...