18 MPG combined. Let’s be frank: nobody buys a 2015 Ford Expedition 2WD 3.5L expecting Prius-like economy. This is a large, body-on-frame SUV designed for serious towing, hauling, and comfortably transporting families. If you prioritize fuel sipping above all else, you’re in the wrong segment. But if you need the reliable capabilities of a full-size SUV, the Expedition presents a known quantity, and 18 MPG is simply the cost of admission.

City and highway performance

The Expedition’s 16 MPG city and 22 MPG highway ratings reflect its strengths and weaknesses. City driving, with its stop-and-go nature and relatively low speeds, makes the vehicle’s weight and aerodynamic challenges more apparent. The turbocharged 3.5L V6, while potent, needs to work harder to get the Expedition moving from a standstill, especially when fully loaded with passengers and cargo. Out on the open road, the 22 MPG highway figure is more palatable. Once cruising at a steady speed, the engine settles into a more efficient operating range. The six-speed automatic transmission helps here, keeping the engine at lower RPMs and maximizing its torque output. However, remember that those highway numbers can quickly plummet if you’re towing a trailer or consistently driving at higher speeds.

Annual fuel cost

The EPA estimates an annual fuel cost of $2,450 for the 2015 Ford Expedition 2WD 3.5L. This figure is based on driving 15,000 miles per year and using national average fuel prices. Your actual fuel costs may vary depending on your driving habits, the type of fuel you use, and where you live. Frequent towing, aggressive acceleration, and consistent city driving will all push that annual cost higher. Prioritizing highway miles and practicing efficient driving techniques can help you get closer to, or even slightly better than, the EPA’s estimate. Budget a bit extra to account for potential fuel price fluctuations throughout the year.

Real-world expectations

The EPA’s figures provide a useful benchmark, but real-world fuel economy often differs. Owner reports on sites such as FuelEconomyHub often show the Expedition hovering right around its EPA combined rating, or slightly below. Terrain plays a major role, hilly areas place a larger strain on the engine, reducing efficiency. Driving style is also important. Heavy-footed drivers will see significantly lower MPG, while those who prioritize smooth acceleration and anticipate traffic conditions can achieve better results. Load also affects the mileage. A completely empty Expedition will fare better than one carrying several passengers and a full cargo area. All all Ford fuel economy data can vary between drivers.

How it compares

Compared to its rivals, the 2015 Ford Expedition’s fuel economy is about average, perhaps even slightly better than some. The Chevrolet Tahoe with the 5.3L V8, for example, manages roughly the same combined figure, 18 MPG, but its city rating is generally a bit lower, at 16 MPG. The Nissan Armada, another competitor, is significantly thirstier, achieving around 15 MPG combined. Even the Toyota Sequoia, known for its reliability, struggles to match the Expedition’s numbers, typically delivering around 15 MPG combined. The newer, independent rear suspension and aluminum body of later Expedition generations brought further fuel economy improvements, such as the 2018 model rated at 17 MPG city and 24 MPG highway. Understanding EXPEDITION MPG across all years is key to finding the right balance of fuel economy for you.

Tips to maximize efficiency

The turbocharged 3.5L engine responds very well to gentle throttle inputs, rewarding those who can resist the urge to bury their foot in the accelerator. Avoid jackrabbit starts and sudden braking. Smooth, gradual acceleration not only saves fuel but also contributes to a more comfortable driving experience for your passengers. Treat the turbocharger with respect, and it will reward you with surprising efficiency for such a large vehicle.

Tire pressure is often overlooked, but it can have a significant impact on fuel economy. Ensure your tires are inflated to the recommended pressure, which is usually found on a sticker inside the driver’s side doorjamb. Underinflated tires increase rolling resistance, requiring the engine to work harder and burning more fuel. Regularly checking and maintaining proper tire pressure is a simple yet effective way to improve your gas mileage.

Keep the Expedition properly maintained. Regular oil changes, air filter replacements, and spark plug maintenance can all contribute to optimal engine performance and efficiency. A neglected engine will use more fuel to produce the same amount of power. Following the manufacturer’s recommended maintenance schedule is essential for keeping your Expedition running smoothly and efficiently.

Consolidate your trips when possible. Multiple short trips, especially when the engine is cold, consume more fuel than one longer trip covering the same distance. Plan your errands strategically to minimize unnecessary stops and reduce the amount of time the engine spends warming up. A warm engine operates at peak efficiency.