My amended graph of composite MPG's since I bought the truck on Sept 17th 2014. My trip to Monahans on the far right brought up the composite averages even though much of the trip was at 75 MPH and 80 MPH. The warmer weather helps although you can see two other peaks that are the result of short trips. A 220 mile round trip to City of Rocks State Park next Saturday (the 18th) at a more pedestrian average of 65 MPG should net me a much higher peak then any of the three you see here.