Ask Honest John

Most recently answered fuel economy questions
I currently own a 1999 Toyota Yaris petrol 1.0 litre. I just wanted to know how much I should expect on a full tank.
I have a Mercedes-Benz E250 CDI Blue Efficiency. This car is supposed to give 53.3 - 57.7 mpg and the average ecoconomy shown on your Real MPG section is 41.1mpg. My problem is that I have averaged...
How many miles per gallon would you expect an R reg Ford Mondeo Automatic to do? The car has been regularly serviced and looked after.
Will you please comment on the new Toyota Yaris automatic hybrid from the point of view of a Motability lease, its reliability and whether the quoted mpg figures are realistic? I have a Yaris 2009 semi-auto...
What evidence enables you to recommend certain fuels to your readers who are worried about supermarket fuels?
My wife has recently purchased a pre reg Fiat 500 at a very good discount, my question regards the stop start system. Do you think it is a gimmick or does it have any real purpose. it strikes me that the...
I am told that the most fuel efficient way of driving in any gear is to drive at or nearest to the peak torque rpm for the engine, is this true? If not what is the peak torque rpm best used for?
I am looking for a car for my family to drive with three essentials; safety, economy and reliability. I am thinking of solid SAAB-like safety rather than gizmos, and the economy should come from an optimised...
BMW 320d Sport Steptronic - is the fuel economy as good as they say? I'm looking at one tomorrow.
I recently test-drove a Lexus IS250C. It's no sports car and could do with one extra litre, but it's very refined and superbly built. I'm being offered an ex-Lexus management car, a 2011 model with very...