Ask Honest John

Most recently answered diesel particulate filter questions
We have decided to change our Zafira GSI and have just ordered a Zafira Tourer 2.0 CDTI. I read your column at the weekend and the diesel particulate issue cropped up, causing me great concern around £2000...
Does this engine have a diesel particulate filter?
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 miles a year. We have driven the car and...
I would like to buy a nearly new Kia Sorrento or Hyundai Santa Fe automatic - I do about 11,000 miles a year, with some regular 150 mile runs. However I am aware of the DPF, DMF and EGR problems you have...
I'm looking at buying a Citroen C3 1.4 HDi 70 Airdream+ (August 2009 model). I have heard some real scare stories about DPFs costing an arm and a leg to replace. Do you think the car will have a DPF?...
Are there any other vehicles similar to my Caddy,(smaller considered) that may fit the bill.
I have read your articles for many years and have taken particular note of your advice regarding using diesel engined cars for regular short runs - as im afraid I do. I do take my car, a Jaguar 2.2 automatic,...
I run a Vauxhall Corsa diesel 1.3 Club, 58 plate, 43,000 miles on the clock, regularly serviced. It is a driving school car. Recently, in the middle of the day, the engine suddenly faded and cut out...
Picked up a 320d SE 2007 (07) yesterday, anyway today it's started causing me problems, obviously I've phoned up the garage, they've given me a car whilst they get it in the garage on Monday. I'm just...
Is DPF flashing light failed for MoT?