If you need to get 14/16 then go with the F150 Ecoboost. The 6.2 will not yield those numbers unless you drive 55 with a tailwind. These trucks weigh up to 7500 lbs empty, they are big and not very aerodynamic. I got 13.8 today on the highway doing 70, but I do have a crew cab and 4x4. The F150 is a good truck and if you check out those forums there is a lot of info on what it can do for you.