Ask Honest John

Most recently answered fuel economy questions
The fuel consumption of my February 2008 Nissan Pathfinder Aventura diesel has been carefully monitored driving on country roads at an average of 50mph and motorway driving at 69mph using cruise control....
I took delivery of a new Audi A4 Avant 2.0 litre 143 manual TDI in August and having now covered more than 5,000 miles I am disappointed with the fuel economy. My previous A4 always returned at least 50mpg....
I have a new S3 on its second tank full of fuel. Driving on the A1 with almost a quarter tank on the gauge and 65 miles left on the fuel range & no low fuel warning light on, the car came to a sudden stop....
Like CW of Moseley, I am experiencing much below indicated fuel economy from my new model Smart ForTwo. Friends with original model Smarts certainly seem to do better. In Surrey, with endless speed limits,...