How many miles per gallon does a 6.7 Powerstroke get on the highway?
The 6.7-liter Power Stroke turbo diesel used in Ford Super Duty trucks typically delivers roughly 19–23 miles per gallon (mpg) on the highway when not towing. Real-world results depend on year, drivetrain, payload, and driving conditions, but highway cruising generally sits around the 20–21 mpg mark for everyday use.
Typical highway fuel economy
On long highway runs with no trailer, most 6.7 Power Stroke-powered Super Duties achieve numbers in the upper teens to low twenties, with 2WD configurations usually posting higher mpg than 4WD versions. Year-to-year changes, weight, and equipment can shift these figures slightly.
Key factors that influence highway mpg
The following factors most strongly influence highway mpg for these trucks:
- Drivetrain and gearing: 2WD versus 4WD, axle ratios, and transmission setup affect efficiency at highway speeds.
- Weight and payload: heavier trucks or those carrying substantial loads burn more fuel on the move.
- Aerodynamics and towing: towing trailers, bed accessories, and added drag reduce mpg.
- Engine maintenance and fuel quality: proper service, clean fuel, and correct oil can influence efficiency.
- Driving behavior and terrain: sustained speed, acceleration, hills, and altitude impact consumption.
- Tires and rolling resistance: tire type, size, and inflation play a role in fuel economy.
In practice, you should expect around 20 mpg on highway runs when unloaded, with 2WD models typically edging higher than 4WD. Towing or carrying significant payload can drop highway mpg substantially, depending on trailer weight and terrain. For precise figures, consult the EPA data for your exact model year and configuration.
Model-year and configuration snapshots
EPA highway estimates vary by year and drivetrain. In recent years, 2WD trucks without significant towing or payload commonly achieve the higher end of the range (roughly 21–23 mpg), while 4WD versions tend to be a notch lower (roughly 19–21 mpg). When towing a trailer or hauling a heavy load, highway mpg can drop into the low to mid-teens, depending on weight and speed. Always verify the exact figures for your specific configuration on FuelEconomy.gov or the official window sticker for your model year.
Summary
Bottom line: a 6.7 Power Stroke typically delivers about 20 mpg on the highway in standard, unloaded conditions, with a general range of 19–23 mpg depending on drivetrain and load. For precise numbers, refer to EPA estimates by model year and configuration on FuelEconomy.gov.
