Ask Honest John

Most recently answered dpf questions
I am about to retire and looking to buy a crossover, but am put off by all the dealers telling me I have to do at least 15,000 miles per year if I want a diesel. I do 10,000 miles. I also have driven automatics...
I need your help. Over the last 40 years I have driven two or three door cars which moved when the pedal was pressed, apart from the last two years when I have been driving a 5-door 1.0 litre Corsa given...
I am a lady driving a Peugeot 3008 1.6 diesel EGC doing about 10,000 miles a year, mostly on short runs of between 10 and 15 miles with only an occasional longer one. I keep reading about the particulate...
Mazda does not seem to do a petrol auto 4WD like the CR-V auto but say they have this Skyactiv technology in diesel, which bypasses the particulate filter problems with low mileages. I only do 1000 miles...
My Mazda 3 recently had a refill of the DPF fluid and forced regeneration by a main dealer due to an engine management light coming on, which produced DPF related error codes. The car subsequently ran...
My 2012 Honda CRV has been in the dealership for six weeks now with a DPF emissions filter problem. This has been a recurrent issue with the vehicle since new; we are now told it will be another two weeks...
We are considering replacing our 2007 Skoda 1.9TDI Estate as it has now done over 100,000 miles. We have been extremely happy with it, mostly using it for 150 miles at a time for motorway driving. We have...
How do you rate the Ford Mondeo 2.0 TDCI 163PS compared with the 2.0 TDCI 140PS version as regards reliability, value for money, known problems, maintenance, DPF reliability, etc.?
I have always preferred to use diesel engined vehicles due to their simplicity and reliability. However, now they are a mass-market product I am not sure if this is still the case. I have noticed a number...
As a petrochemist specialising in engine lubrication I have to agree with your comments entirely. It's not commonly known that driving habits have an effect on vehicle reliability, and short journey "shopping...