Ask Honest John

Most recently answered fuel economy questions
I have a Peugeot 206 2.0-litre HDi, which has suddenly started using fuel excessively. What could be the cause? It used to return approx 50mpg but this has dropped significantly in just the past three...
I have read the reviews but I need your opinion. Skoda Yeti or Hyundai ix35? Which is more reliable?
I have just test driven the new Audi A1 and found it to be every bit as good as one would expect Audi to be. I did have concerns that a small car would lack the same quality build as the more expensive...
I have used Shell and BP petrol and diesel fuels for their higher detergent and lubricity respectively. Other than more power, what advantages do V Power/Ultimate offer to justify the higher price, compared...
Further to our discussion about the FIAT 500 TwinAir, ‘Autocar’ only got 37mpg out of the car on its first drive of the Lounge and 35.7 mpg on the full Autocar test, which is far worse than you get in...
I need a new economical hatchback, but with plenty of luggage space and top of the range spec. I am looking at the Hyundai i30, Suzuki Swift, Renault Modus or Seat Ibiza and would be grateful for your...
My wife is keen to buy a new car and has her sights on the Mazda 2 Activematic. Have you had the opportunity to test one yet?
I own an 1994 Isuzu Bighorn 3.1TD LWB that has served me well for about 10 years now, used on our small farm for the occasional heavy towing task (livestock in a trailer to slaughter, hauling baled hay...
I want to buy a FIAT 500 and decided that the 100PS 1.4 engine should provide the kind of performance I am looking for. FIAT has now produced the 85PS 'TwinAir'. Should I consider this, as FIAT claim,...
I want to change my big old car for something small and economical. There are so many to choose from, but what do you recommend? I want low tax group, low VED and good mpg. I do mostly rural driving, occasional...