Ask Honest John

Most recently answered maintenance and servicing questions
I have owned and loved a Land Rover Discovery 4 for the last 6 years and the mileage is 59,500. Two weeks ago catastrophic engine failure occurred. This was due to movement of crankshaft bearing shells,...
My Mercedes-Benz ML270 CDI (2004) is a bit sluggish when starting up from cold in the morning - it's only just started happening. I have to press harder on the accelerator to get the car going which is...
I'm driving a 2005 Volkswagen Touran 2.0 DSG automatic diesel. It has done 138,000 miles. Is there anything I should get done? It drives well, however, the engine emission warning has lit up on the display....
Not so much a question, more a case of strange advice. I have been a vehicle technician for over forty years. Two months ago my daughter bought a brand new Toyota Yaris and from day one (the day I road...
I have strange problem with my Ford Focus MK1 1.8-litre. When the speed sensor is plugged in my car's revs will not drop to idle when in neutral and the car is moving. In fact, when it's moving at any...
I recently took my Volkswagen Touareg for its first ever service, I've owned it since new, and one of the issues was a fault on the lights sensor. This is part of the windscreen and they tell me that the...
I have a new Ford Fiesta Ecoboost turbo 140PS. After a 400 mile journey the coolant level had risen to above maximum. I removed some coolant so that it returned to the maximum level. After another journey...
My 2011 Jeep Compass heater is blowing cold air all the time. Any ideas on what is wrong?
I own a 2008 MINI Cooper which looks great but is worth scrap value as it has a porous aluminium head just diagnosed. The car has cost us £3000 in the last three years and this is the final straw. It has...
I have a 2003 Audi A6 4.2 V8, with almost 150,000 miles on the clock. It has always been regularly serviced by an independent Audi specialist, and runs like a dream. However, my mechanic insists that they...