I have a 2014 F150 Eco-boost. Best gas mileage I have gotten is 21 on HWY driving to Houston. Averages about 16---most city driving. I haven't pulled anything super heavy---flatbed trailer with my 34hp Kubota. Pulls great. I have 18,000 miles with no problems at all. Push that pedal and the sucker takes off like a rocket.
I love my truck.
todd