Ask Honest John

Most recently answered technical issues questions
I am purchasing an Audi S4 2005 model - will the car run on standard unleaded or should/must I use super unleaded or V-Power? If I have an option will I get more mpg with the higher octane petrol? Are...
There's an annoying rattle from rear underside of my 2006 S-Type(52,000 miles) on bumpy roads. Local Jag specialist thought it was rear suspension bushes which cost £190 to replace and was ineffective....
I have Focus Estate 1.6tdi(110) which is due for its 6-year service and my local Ford dealer tells me the DPF is due for replacement at a cost of several hundred pounds. The car has only done 55k and...
We have a 2009 Peugeot 207 1.4hdi (no DMF or DPF system on this one, thankfully!). Bought it at a year old with two year manufacturer warranty remaining. It was on 19k when we bought it, and three months...
We have just bought a brand new Mini One diesel for our eighteen-year-old. Both my husband and I have experienced dangerous power surges that lurch the car forward when taking the foot off the clutch....
I bought a Saab 9-3 Vector 1.9TID in June last year. It is a 2008 model with 78,000 on the clock. I took extended 2 year warranty out with it when purchased from Evans Halshaw Stockport. I have done...
Is there a known problem with high oil consumption in the current Twincharged Polo GTI 1.4?
Recently purchased a Ford Mondeo turbo diesel and cannot recall how long to tick over after a run. Could you please advise.
Our car is a Peugeot 207 1.4. Bought it after reading all your reviews which are SO helpful. We recently had a service and were notified 'coolant housing on cylinder head leaking' and quoted £174.40 to...
I have to apply full lock (or almost) to get out of my drive as cars park either side. I have noticed that the car jolts and makes a noise. The jolt is a little like a skid. I have had the car 2 weeks,...