That is excellent mileage for everyday driving! If you push and hold the DISP button while on MPG average, it will reset it in case you just filled up and you would like to start all over again.I finally found the little button on the steering wheel that gives you the "tank MPG" and "MPG average". I have about 4700 miles, and the MPG average says 18.1. The tank MPG says 20.8 (highway about 70mph). In regards to the former figure, does that mean I have averaged 18.1 MPG since I got the car, abuse and all? That woulde be impressive. Check out yours, and let me know what you guys are doing...