properly equipped ecoboost F150 is rated for 11300...Honestly, I don't know that I'd want to pull that much weight with an Ecoboost for very long. I have (and love) an Ecoboost, and while it is a very capable truck and motor, towing a 6600# travel trailer netted me single digit mpg. I don't tow very far at a time so it doesn't bother me. If I were doing cross country trips on a regular basis I'd be investing in a diesel. If your just driving a few miles at a time from your home to a racetrack or something, the Ecoboost would be a superb choice. One other thing, read up on the frontal area calculation of your trailer and what the trucks of choice are rated to pull. I know for a fact that most people ignore this part of towing. It makes a huge difference what size of wind plow you're trying to move down the highway...especially when you get into a wind...