ktm 990 super duke 32 mpg ( commuting or on 1 wheel)
bmw x5 3.0 petrol 23 mpg (over 970 miles)
yamaha tdr 250 (2 stroke ) 46 mpg ( general hooning about)
honda fireblade 97 model 45 mpg tho will do 85 mpg if it has to
general 1 wheel fun gives 40/45 mpg tho