Have a 1998 automatic corsa which only gives about 34 mpg - notice the newer models give up to 55mpg. Is anyone achieving this and if so which model as Im thinking of changing - thinking of other makes as well but must be auto or semi auto due to a knee problem. Had a drive of an axiam drove ok but really noisy diesel engine otherwise would have fitted the bill as these cars do a fantastic mpg. Not looking for speed but mpg.