Ask Honest John

Most recently answered owning questions
I put 25 litres of petrol on top of two gallons of diesel in my wife's diesel engined car, then drove five miles before the engine juddered and I realised my mistake. Pulled up immediately and called...
I bought a 7 month old Avensis in February 2007 and was disappointed to find it had been hire car and e-mailed you with my concerns. Your response "Why not? They are usually the best run-in cars you can...
I own a Santa Fe auto diesel 2011. Despite almost constant use of the ECO button the fuel consumption continues to rise. Originally it achieved 39mpg and now some 28,000km later it has risen to 27.1mpg. Normal...
My wife and I test drove a 2 year old Prius today. Lovely car but very bad smell coming from passenger side, where my wife sat. Neither I nor the salesman could smell anything. We bought another Prius,...
I know diesel is dearer than petrol now but I seem to be using just as much diesel with this car than I did petrol with previously owned cars. Most of my driving is around town but each month I do a...
I own a Porsche Boxster however have fancied a Ferrari for some time - a 355 or 360.What would be the best way to own one for say 6 months and doing about 6k miles. Is it possible to lease one or contract...
Really bad smell coming from my exhaust. Have replaced fuel filter, EGR valve and exhaust flex (fumes were coming into the cabin but replacing flex cured this) and emissions are perfect but still bad smell....
Can you suggest tyres for my Discovery 3 please? I have read Pirelli Scorpion ATR and Vredestein Xtreme are good. My current tyres are Nexen 255/60R 18H nearing the end of their life. I do very little...
My Focus has a stuck spark plug which is causing a misfire.
Just purchased a used (2009) Totota Avensis. No spare tyre, only an emergency kit. There is provision for a full spare tyre, so should I purchase a spare wheel and tyre? I don't want an emergency wheel/tyre. I...