Ask Honest John

Most recently answered technical issues questions
My Audi A4 Avant has nearly 150,000 on the clock and is going strong. What engine oil would you recommend? Presumably a fully synthetic product meeting VW 504:00 is appropriate, but which make do you...
After leaving my MINI for a year or so while working away I came to try to start it today. I changed the battery for a new one, checked the levels and so on. She opened up no problem turned on and turned...
Despite changing, in this order: thermostat, coolant temperature sensor, water pump and temperature gauge, the temperature is fluctuating on my Ford Mondeo. This after years of reaching and maintaining...
What are known problems with 7 speed DSG gearboxes with hesitation on turning, starting off at low speed and going uphill after slow approach from main road? I have new (May) car and have suffered all...
My car will not start. It was fine in the morning going to work, but to come home it would turn over but not start at all. AA sprayed engine cleaner into it which made it start, but then the engine cut...
My car has been in garage three or four times in 6 months and I have paid over £500 to fix an oil leak. Garage says there is more than one leak. Last time the car was in garage he said it was definitely...
I have recently purchased a Mazda 6 2.2 TS2 Diesel. With Full service history. The DPF light has come on at 65,000 - The dealership has adviced this it due to the Timing chain exceding tolerance (stretching)...
I recently bought an ex-motability Mazda 2 (2009/41,000miles) from a reputable dealer from whom I've bought cars before. They were more than willing to let me take it to my own local garage for a check-over,...
I have owned a Sept 2010 1.6TDI Skoda Octavia with the dry 7 speed DSG gearbox from new. Currently it has about 44,000 miles on. I like the car "it does what it says on the tin" However there is a recurring...
My Ford Focus 2.0 TDCi 05 plate runs rough when cold - like a petrol car 'missing.' It's OK when accelerating. I have had the glow plugs changed but it made no difference.