Double your economy in the same car - this is the startling claim put to the test by Auto Express readers this week. In an exclusive test, we set four readers the task of doubling their fuel economy by doing nothing more than changing their driving style.
Guided by experts and subject to controlled conditions, our budget conscious drivers took the wheel to see how much they could save. Find out how they did in the next issue of Auto Express magazine on sale from September 19.
Meanwhile, have you got any tips on how to go the extra mile on a tank of fuel? If so, send in your ideas to mail@autoexpress.co.uk