I got a new Ecoboost last week; Screw, Larait, 4X4, 3.73 Max tow package. It has 234 miles on it now. I drove it to work one day this week. It is a 31 mile trip and my old truck, F250 6.4 diesel, 3.55 open, screw lariat, 4X4, would average 12.5 for the 62 mile loop, mostly rural roads, about 5 lights and about 6 stop signs. The Ecoboost shows 18.4 on the same loop. I drive pretty conservative and generally don't go more than 5 miles or so over the speed limit. My tonneau cover did not come in yet and the big mirrors (great for towing and I like them) have to drag through the air. I will keep watching it but so far, I am very pleased.