Ask Honest John

Most recently answered diesel engines questions
I have a three year old Audi A4 with the 2.0-litre TDI engine. As with all owners, I have been contacted by Audi to have a software update made to my car to rectify the "cheat" device over NOx emissions....
I am looking to buy a late 2015 Volkswagen Passat diesel - 1.6 TDI - from a dealer. Is there anything in particular I should know about or look out for in this car?
I cannot find the fuel cutoff solenoid on my Renault Laguna diesel. I know there's one somewhere, but none of the books or diagrams show exactly where. Can you help?
I have a 2008 BMW 120d M sport with 65.000 miles on the clock from new. The car has developed a severe vibration through the gear lever and clutch pedal. Any suggestions as to the cause?
I need a compact 4x4 with an automatic gearbox. I've seen two used Skoda Yetis for sale, both diesels with 10k on the clock. One is a 170PS, the other a 150PS with AdBlue. Which would be the best choice...
I own a Vauxhall Vectra C 1.9 diesel. It has a manual gearbox and a DMF. The problem I have is when the clutch is not engaged. The car runs smoothly and then stalls, with a clicking noise. This happens...
My 2012 Volkswagen CC went back to the dealer for its emissions work back in July 2016; however, since then the engine has developed a very large rattle and no longer gets better than 47mpg (used to be...
My son owns a (2001 model) Mitsubishi L200 2.5 diesel pick-up. When starting from cold, the vehicle belches out smoke. He was warned that the turbo is on the way out; however, whilst driving home from...
I have a 2009 Vauxhall Astravan 1.7 diesel. In the past few weeks the vehicle has started developing a smoking issue, which no one can find an answer for. The smoke is grey in colour, but the van doesn’t...
I would like some advice on what car to buy. I have £2000 to spend on ideally a reliable MPV but I would also like it to be good at towing for up to 1.3 tonnes. What would you recommend?
 

Value my car

Save £75 on Warranty using code HJ75

with MotorEasy

Get a warranty quote

Save 12% on GAP Insurance

Use HJ21 to save on an ALA policy

See offer