my best mileage in a x3 x28i has been 28.3 highway, springtime
worst mileage in a x3 x28i has been 18.2 city, winter
it a nice 4 cylinder with a turbo on it. Reality is that the more you drive it with your foot in the turbo, it will proportionately reduce longivity.
And if you check the curb weight of the x3 . . . . its no skinny mini.
But bottom line is ITS YOURs . . . . drive it like ya stole it,. . . . . . . . . . . or not
