Ask Honest John

Most recently answered performance questions
I am thinking of re-mapping my Jaguar XF 3.0D diesel. I've been told that the torque will increase from 369 to 449 lb ft, with an associated increase in bhp from 236 to 327. They also claim a small improvement...
A friend has £12,000 to spend on a used car. Performance and handling are very important. Badge, status, and frivolities such as heated seats, sat-nav, electric mirrors etc are totally unimportant. Both...
I have read your advice online about buying and selling cars, which is a process I do not enjoy. However I am keen to buy a Mazda MX-5 sports car before I get too old to enjoy one and will need to part-ex...
I am looking for a new/nearly new car, budget up to £25,000. I do not transport, children, dogs or surfboards, therefore, have a very wide choice. I do about 10,000 miles a year, minimum journey 15 miles....
I am considering trying Terraclean performance tuning on my BMW 118d, in the hope of improving emissions and improving performance by removing engine carbon deposits. Do you know if such a treatment is...
I have recently retired and will be moving to the country shortly. Sadly, I will need to sell my much-loved Audi TTS and get something more practical with a greater load bearing capacity. I don’t want...
Your advice to PT on Morgans was, as usual, a very fair and erudite comment. I'm not sure about them being relatively high maintenance though. My experience of the current range (we drive a 2008 Plus 4)...
I am finally looking to replace my cherished Renault Clio 182. I have up to £20,000 to spend and want another hot hatch that will handle great and perform like a little sports car. Can you recommend three...
I wish to buy an inexpensive convertible and have been seduced by the cute looks of the Daihatsu Copen. However I understand that Daihatsu no longer markets cars in the UK. Will this mean servicing and...
I am writing on behalf of my aunt and uncle who are looking to buy a used car. They would like something that would be reliable and powerful enough to keep up with modern traffic. They would prefer to...