The 2018 Ford F-150 Power Stroke has been given an EPA-estimated fuel economy rating of 30 mpg highway, 22 mpg city, and 25 mpg combined. Ford boasts the 30 mpg highway figure is best-in-class, outperforming the 's 27 mpg highway figure. However, David Tracy at did a bit of digging and found the F-150 Power Stroke will only achieve that figure in two-wheel drive spec. Checking off 4x4 on the option sheet drags down the highway mileage figure a massive 5 mpg. “A Ford representative told me ... the four-wheel drive version of this same truck scores an EPA rating of 25 MPG highway, 22 MPG combined and 20 MPG city,” wrote Tracy.