I would guess in the 12-15 range. I drive it to the track or on back roads mostly. Run E85 and I don't want to know exactly what the MPG is I do know that the closest station with E85 has the best price in town. Last time I filled up it was $2.35/gallon! Always 70 cents cheaper a gallon than 87 at that station. Tests to 85 as well :beer: