Only if you are in to the turbos all the time. Otherwise, its a gas sipper.
Been driving my 2016 F150 with the 3.5 Ecoboost, 3.55 gears, for almost 9 years now; my overall fuel mileage since new is 20 mpg and that includes a lot of towing miles which halves the non-towing fuel mileage. And...