My car is supposed to do 49mpg, have just refilled to work out its only doing 22.5mpg, Only had the car (04 plate) a few months. still in warranty.
(did 280 miles from full tank to running on fumes £66 - 56.5 litres used)
I know driving styles vary etc, but what could be wrong mechanically?
Would hooking it up to one of those bosch diagnostic machines be any good? Its got FSH etc and 50k on the clock....