Ask Honest John

Most recently answered diesel engines questions
I have ordered and put a deposit down on a new BMW X3 due to be delivered March 2016. Should I cancel it or wait for BMW to sort themselves out?
Earlier today you stated in an answer that only the 2.0 TDI engine is involved in the VW diesel scandal, it would now appear you were wrong VW have conceded the 1.6 TDI is also included and these are...
Just took delivery of a VW Passat 2.0-litre CC diesel automatic. Then the emissions news broke. I've got 30 to return it. HELP! Can you help me through the rhetoric. What is the bottom line? Should...
With all the current hype about diesel cars, the fact that all commercial transport is oil fuelled seems to have been overlooked. What is the emissions situation on these much larger and thirstier engines?...
I am thinking of buying a 60 plate Skoda 1.9 TDI PD and can't get a definitive answer to the question of does this engine have a DPF fitted. I've asked a similar question before but based on the garages...
My daughter is looking to buy a 2007 Alfa Romeo 159, can you tell me if the diesels are reliable?
I have seen adverts indicating that the Jaguar X-Type is fitted with a BMW diesel engine. Is this correct? If so, which models would feature them?
I own a Vauxhall Signum diesel 2006 plate. The engine management lights keeps coming on when I floor it or press down quick on the accelerator. The car/spanner light comes on at other times but not together....
I own a Mercedes-Benz C200 2010 model.It has 400,000KM and lately I noticed the following: When i start the car, it works at around 800rpm. When i press the acceleration pedal at N it "chokes" for a...
I have a 2010 Volkswagen Golf 1.6 TDI. I have just completed 88,000 miles of trouble free motoring from new. I have had recently changed the cam belt and have had it main dealer serviced throughout its...