Ask Honest John

Most recently answered diesel particulate filter questions
We have a 4 year old and we have twins due in June. We currently have a Ford C-MAX and we are worried that we will not get three car seats in the back. It is also petrol and most of our driving is short...
Is there any easy way of telling which diesel cars have a DPF? I had assumed it was only those that were Euro V compliant but when browsing some second hand Renault diesels that were Euro IV compliant...
I have just been quoted £2300 to replace the DPF filter and EGR valve on my 2007 Fiat Multipla diesel. The car has done 10,000 miles in a year, the majority of which were in the city but with a 100 mile...
I would like to buy a premium small family car and had decided on a 118D until I read the letter "Recharge of the light brigade " in the Telegraph. My usage would typically be short school runs, occasional...
Despite reading your column each week I am stiil confused and getting conflicting advice. Should I buy petrol or diesel engine? I drive 9000 miles a year, most of which is on A-roads with a 60 mph limit....
I currently have a Skoda Octavia 1.9 Tdi Elegance which will soon need four new tyres and timing belt change, so decision time looms. Should I keep it for years and run it until repairs become uneconomical...
"Peugeot only expects to sell 8,500 508s in the UK in a full year, split 50/50 saloon/SW and 80/20 diesel/petrol, though, once the public starts to catch on to the disadvantages of EU5 diesels, I expect...
I am changing my car this year (2006/56 Mercedes E280CDI with 30k miles) and am considering either Jag XF, BMW X3 or perhaps another Merc. My concern is they all have this DPF nowadays and as I only do...
I need a diesel car for towing a caravan, and have been considering a 2010 XC70 with the 205ps Geartronic D5 engine. I don't use the car for really short journeys, but I am concerned that with such a high...
I do very low mileage (5,000 miles per year) and I was advised against getting a diesel due to DPF and DMF problems. But when checking out a VW Golf 1.2 TSI 105 some people wondered do these cars have...