Originally Posted by BigD
Somebody set up the bomb to your calculator. The EPA rating on your car is 17 city 21 highway, and EPA ratings are absolute best case conditions - done on a dyno, at constant speed and load, accelerating like grandma. In other words you'll never hit those numbers, reality will be much worse, especially if you drive with any kind of enthusiasm.
Last I checked it was 18/24, which is better than an E30 325i/iS.