Ask Honest John

Most recently answered fuel economy questions
I am looking to change my car from a Citroen C2 to a Fiat 500. I'm interested in economy and will probably keep this car for at least 10 years. I have always liked diesels but am worried about the problems...
There is an article in a recent ‘Economist’ magazine on a new generation of diesel engines. These apparently achieve better fuel consumption by reducing the compression ratios, enabling lighter faster...
My car insurance is due for renewal in the near future and I would be grateful if you would confirm the names of the top five companies in the latest customer care survey. I also own a 2009 Ford Focus...
More than once in your column I've seen complaints by readers that cruise control is a fuel waster. I was always under the impression that cruise control allows the engine management system to select the...
Will replacing the normal 16-inch tyres with 17-inch runflats affect the drive or consumption on my BMW 320d?
I’m in the market for a used car. I want something small, with five-doors and low/zero VED. What would you recommend for £5000?
I want to downsize from my Mercedes-Benz C-Class CDI as I head towards retirement. I want a car that is smaller, but provides me with a similar quality of ride, economy and comfort. My only spec requirements...
I have a 2008 Volvo V70 D5 Auto. At approximately 1600rpm the car stutters and feels sluggish. In park, at the same rpm, there is a roughness / imbalanced feel to the engine with the car vibrating slightly....
I need to replace 16-year-old, seven-seater Volvo estate. I want to buy something that will be comfortable on the motorway, but provide good fuel economy. I’ll be driving up to 15,000 miles a year and...
I am 74 and own a 2006 Renault Modus Privilege. It has 40,000 miles on the clock, but is it expensive to run and I want to replace it with a nearly new car. I like the seating of the Modus and need five...