Ask Honest John

Most recently answered diesel engine faults questions
Our daughter purchased a 3.5-year-old Land Rover Discovery with 40,000 miles on the clock six months ago, for which she paid £45,000. The car broke down last Friday, the RAC Recovery Technician could not...
I own a 2017 Vauxhall Astra 1.6 CDTI SRI NAV. The engine light is on and going in limp mode. It shows codes: P2453, P2452, P244A, P226D. Can you tell me what is wrong with my car?
I was driving recently when my 2007 MINI Clubman caught fire. It had had a new diesel engine fitted over the summer after the previous engine suffered a persistent oil leak. It had also had a recent service....
I have a 2011 Citroen DS4, purchased two years ago. Since January, the engine light keeps coming on and the car will go into limp mode. I had the emissions filter 'fixed' in January by the dealer from...
I'm interested in spending up to £30,000 on a quality coupe. Is it unwise to be buying a diesel in the current climate?
I own a 2007 Nissan Navara D40 LE top spec model with 70,000 miles. Every extra and gadget is installed and it's in showroom condition as I've only used it as a Chelsea tractor. It's on sale for €8000,...
I have a 2011 FIAT 500 1.3 MultiJet diesel purchased in March 2016. I've had a problem with sporadic engine noise, vibration and black smoke coming out of the exhaust. I've been told there is nothing wrong...
We will be looking for a family SUV around April/May and can spend up to £12,000. Will prices come down after the new reg in March? Also, with the crackdown on diesel, should we be looking at petrol? Our...
My 2010 Volkswagen Golf VI 1.6 TDI has done 64,000 miles and the glowplug warning light keeps coming on. Will Terraclean clean my EGR? I won't be having the emissions fix.
I understand that many Volkswagen Golf that have had the emissions fix have had subsequent problems with the engine. Is this correct?