i have an abf,
i can roughly sqeexe £57-60 in it by filling up the filler neck, I do 350 miles a week and a whole tank will last me average of 320 miles,
so roughly
42.8 litres = 9.4 gallons
320 / 9.4 = 34 mpg,
my daily run includes some town, an A road blat, then a long twisty B road, most days i drive average but then there are the days when i like to give a boot full & will see as low as 22mpg
i have got the on board readout to get to 40mpg but with the calculatore its only ever 37-38mpg....