18 MPG combined isn’t going to win any hypermiling contests, but it’s the reality for the 2018 Ford F-150 3.5L 4WD with a GVWR over 7599 lbs. This isn’t a truck for saving gas; it’s a tool, plain and simple. Its buyers are primarily concerned with capability: towing heavy loads, hauling equipment, and getting the job done in demanding conditions, regardless of the weather. Fuel economy is a secondary consideration, a cost of doing business accepted in exchange for the truck’s considerable talents. They need a heavy-duty workhorse, and this F-150 delivers.

City and highway performance

The EPA pegs the 2018 Ford F-150 3.5L 4WD at 16 MPG in the city and 21 MPG on the highway. The city figure reflects the stop-and-go nature of urban driving, amplified by the weight and size of this particular F-150 configuration. Expect lower mileage when hauling a full load of tools or navigating congested work zones. The highway rating, achieved under more consistent speeds, is somewhat more palatable. However, aggressive driving, such as frequent acceleration or maintaining speeds significantly above the posted limit, will quickly reduce that 21 MPG, pulling it closer to the city figure. Remember to compare this to F150 MPG across all years to see if this generation aligns with your needs.

Annual fuel cost

The EPA estimates the annual fuel cost for this specific 2018 Ford F-150 variant at $2,450. This figure is based on driving 15,000 miles per year, with a presumed mix of city and highway driving, factoring in national average fuel prices. This is an estimate. Your actual fuel costs will vary depending on your driving habits, the actual price of gasoline in your area, and any modifications you make to the truck. If you consistently haul heavy loads or spend a significant amount of time idling, you should expect to spend considerably more than $2,450 annually. You can see all Ford fuel economy data here.

Real-world expectations

While the EPA provides a standardized benchmark, real-world fuel economy can vary considerably. Owners of this particular F-150 configuration report a wide range of MPG figures, often falling slightly below the EPA estimates, especially in combined driving. Towing significantly impacts fuel consumption, often dropping mileage into the single digits when pulling heavier trailers. Factors like tire pressure, the age of the engine, and the overall condition of the vehicle can also influence real-world figures. Owners living in mountainous or hilly areas might also see their fuel economy decline, as the engine works hard to maintain speed uphill.

How it compares

The 2018 F-150’s fuel economy should be considered with its competitors in mind. For example, a 2018 Chevrolet Silverado 1500 with the available 5.3L V8 and four-wheel drive is rated at 16 MPG combined. A Ram 1500 with the 5.7L Hemi and 4WD achieves a similar 17 MPG combined. These numbers illustrate that the F-150’s fuel economy is competitive with other similarly equipped full-size trucks with larger displacement engines. The 3.5L EcoBoost in the F-150 offers a blend of power and relative efficiency, but it’s not going to outperform smaller trucks in terms of fuel savings. The slightly better fuel economy of a V6 Tacoma doesn’t matter to someone who needs to tow 9,000 lbs every week.

Tips to maximize efficiency

Regular maintenance is critical for maximizing fuel efficiency. Ensure that your tires are properly inflated, as underinflated tires create more rolling resistance, significantly reducing MPG. Follow the manufacturer’s recommended maintenance schedule for oil changes, air filter replacements, and spark plug maintenance.

Avoid aggressive driving habits. Rapid acceleration and hard braking consume more fuel than necessary. Anticipate traffic flow, maintain a steady speed when possible, and avoid unnecessary idling. Use cruise control on the highway to maintain a consistent speed and conserve fuel.

Reduce the weight you carry in the truck bed. Unnecessary weight reduces fuel economy. Remove any tools or equipment that is not needed for your current task. Likewise, evaluate the aerodynamic profile of your truck bed, a tonneau cover can improve wind resistance at highway speeds.

Consider using the tow/haul mode only when necessary. While it provides optimized performance for towing, it also alters the transmission’s shift points, holding gears longer and potentially increasing fuel consumption when not pulling a load. Engage it only when actively towing or hauling heavy loads.

Use Fuel Efficient driving mode if equipped. Many trucks have these automatic settings and can improve your gas mileage without needing to alter your driving habits.