Ram 2500 5.7 hemi mpg.....a bit disappointed

I loved my 2500 5.7 but the best mpg's I ever averaged was 13 overall with 3.73's. Also, make sure to hand calculate to make sure of your average mpg accuracy. It's a big, heavy, powerful truck and they drink some gas, doesn't matter if it is the 5.7, 6.4, 6.2 or 6.0. If you want good gas mileage in this wieght class you need to look at the diesels.
If you averaged 17.6 mpg's overall that is pretty darn good, I am from St. Louis, Fenton to be exact and I know the hilly terrain you are talking about pretty well.