With its sights set on improved fuel economy, Ford put its all-new, 2017 F-Series Super Duty on a strict aluminum diet, just like the light-duty F-150 before it, managing to shed up to 350 pounds from the curb weight of its predecessor.
Yet despite this, the F-Series Super Duty with available 6.7-liter Power Stroke diesel might still have a ways to go with regard to bolstering fuel economy. Website PickupTrucks.com just ran a fuel-economy test pitting a the 2017 F-250 Super Duty diesel against three competing 3/4-ton diesel trucks, discovering that both the Ram 2500 HD and the Nissan Titan XD outperform the Ford in terms of miles-to-the-gallon. Only the Chevrolet 2500 fared worse.
To test the fuel economy of all four trucks, PickupTrucks.com ran them both unloaded, and burdened with a 10,000-pound trailer, averaging the results from each test. With a 16.2-mpg average, the Ram 2500 HD was the clear winner, followed by the Nissan Titan XD with 15.4 mpg. The Ford F-250 Super Duty scored an average of 15.2 mpg, just ahead of the Chevrolet 2500 with 15.1.
Both the Ram and the Nissan offer Cummins diesel engines: a 6.7-liter unit in the former, versus a 5.0-liter mill in the latter. Ford’s 6.7-liter Power Stroke, while evidently not as efficient as those oil-burners, does at least offer a class-leading torque rating of 925 lb-ft.