I have been trying to drive my Saturn station wagon for mileage. I seem to be getting between 28-30mpg which I believe is about a 15% improvement. However, I did not track the data before I started trying to drive for mpg, so that is a guesstimate.

Last tank I was doing really, really well even with AC. I thought I might get 31-32mpg. My wife used the car to visit her parents, about 15 minutes each way. When she returned it almost a quarter of a tank was gone!! :o

28mpg for that tank.

Question: I know open windows at highway speeds kills mpg. What about at moderate speeds? 30-45?

BTW- I do intend to post my data, I just haven't had a chance to do so.

Patiently praying for a Prius