If $2.70 is 14% of the cars fuel, then filling the tank costs $19.29. At $3 that is 6.42 gallon tank. I somehow think this BMW has a much larger tank than that. If we say a whole gallon was used and your 1/7th is correct, then you think this car has a 7 gallon tank. If the car was not full, that changes things, but… » 11/17/14 12:41pm 11/17/14 12:41pm