Ask Honest John

Most recently answered fuel economy questions
I registered last year as an e-Pioneer with Vauxhall and paid my £150. A month or two ago I got to drive an Ampera at the Motor Expo in Canary Wharf and even had a chance to chat with Quentin Wilson who...
Once again the subject of EC fuel consumption figures features in your pages. The official figures for my Volkswagen 1.4 Fox Urban are: Combined cycle 42.2mpg, Extra Urban cycle 50.4 mpg. On two recent...
I have noticed that the fuel economy of my diesel 607 improved by about 10 per cent during the hot spell of weather. Would there be any point of using the old-fashioned idea of a radiator blind or muff...
I replaced my old Audi A3 1.6 petrol with a 2-year-old Audi A4 TDI 2.0 with the new CR engine, primarily to get a much more economical car. The figures for combined economy should be around 50mpg and motorway...
I run a Ford Mondeo 1.8 estate (Dec 2005). It has done 55,000 miles. I cover around 5,000 miles per year - much local but with 300 mile motorway journeys three or four times a year. I really like the car...
You recently test drove the Nissan Micra DIG-S. You were quite positive about the new supercharged engine and it's claimed 69mpg combined fuel consumption. Looking back to the large difference between...
I wonder whether it's a general rule or Honda specific that the MPG indicator reading in the car is a little on the generous side. After a trip of 397 mainly motorway miles, the car indicator registered...
I need to buy a small to medium used car that is less than 3.5 years old for less than £10k and I want something that is all singing and dancing i.e. it needs to have leg room in the back for 2 adults....
I do 36,000 miles a year commuting (95% motorway) and have been running a 2007 1.4 diesel Fiesta to keep fuel costs low. I've already had to replace the EGR valve and there are signs of further trouble...
I rather fancy an XF Jag. All the information on your site and elsewhere seems to concentrate on the diesel version. As I only potter around doing, say, 5000 miles a year, a diesel seems a bit problematic....