In this weeks Autocar magazine, six fuel sippers took part in our one hour, one gallon challenge.
We took a Toyota Prius, Honda Insight, Ford Fiesta, BMW 116d, Vauxhall Corsa and a Smart CDI to Bruntingthorpe Proving Ground to see which car would travel the furthest on one gallon of fuel in one hour.
See the hi-res one hour, one gallon challenge picture gallerySee the challenge on video here
Unlike other mpg tests which reward slow driving, the winner of this one would be whichever car traveled the most miles in an hour on a gallon of fuel, regardless of whether or not it ran out before the end of the challenge.
The full results are in this week's Autocar magazine which is on sale now.
