Ask Honest John

Most recently answered dpf questions
I have the chance to buy a 2010 Audi A3 2.0 TDI with 5000 on the clock. The owner has emigrated and the car has not been driven regularly for some time. I travel 6000 miles a year - would you foresee...
My 4-year-old Mazda 3 1.6 diesel has done 63,000 trouble-free miles. I live in the country so don't do many short trips (the nearest shop is 7 miles away). I am told by the Mazda dealer that my next service...
Crikey. Ford is quoting 6-8 months for a new Mondeo. At least, according to the second dealer I spoke to. The first was staggeringly rude. A Mazda 6 Tourer 2.0 petrol engine looks similarly good. Any advice...
I want to change my 10-year-old BMW for a hatchback with automatic transmission such as the Golf or Focus. The Volkswagen dealer is trying to sell me a 2.0-litre diesel, but I would prefer the 1.4 TSI...
I have a 2007 Ford Mondeo 1.8 TDCI Titanium X estate. It was my company lease car, which I bought a year ago on leaving the firm for £2500. It has 114,000 miles on the clock, but the engine has been smoky...
I have been worried about replacing my 2006 Land Rover Discovery 3, which I believe doesn’t have a DPF. I want to buy a newer Discovery, but am fearful that my short journey to work (four miles) will cause...
I'm looking at purchasing a used Volvo XC90 (diesel) but don't want one with a DPF. I'm also unsure about the engine size - is the V8 worth the extra money or is the D5 sufficient?
My wife has bought a 2012 Mini Countryman with a diesel engine. She does about 3000 miles a year on local trips; what problems can she anticipate with the DPF?
I am looking to buy a Toyota Yaris 1.4D for my length daily commute. I have found a 2013 car with 34 miles on the clock for £13,495. but am not sure if this is better value than a 2010 car with 46,000...
I read your column with interest each week and you constantly reiterate the problems with DPF and short journeys. I recently purchased a Dacia Duster, which I am extremely pleased with; nowhere near as...