17 MPG combined. That’s the headline figure for the 2015 Lincoln Navigator 4WD with its 3.5L EcoBoost V6. It’s not a number that will win any awards, but it’s also not shocking for a full-size, truck-based SUV that prioritizes space, towing capacity, and a commanding presence above all else. The Navigator isn’t bought by penny-pinchers; it’s bought by families who need to haul kids and cargo, or by those who regularly tow boats or trailers. For these buyers, capability trumps fuel economy, even if it means frequent trips to the gas station. They’re buying into a legacy of American luxury and unapologetic size, and they understand the realities of owning such a vehicle.

City and highway performance

The EPA estimates the 2015 Navigator 4WD at 15 MPG in the city and 20 MPG on the highway. The city figure reflects the stop-and-go driving conditions that are rarely kind to heavy vehicles, especially those with older six-speed automatic transmissions. The highway number reflects the Navigator’s ability to cruise comfortably at higher speeds, although its boxy shape still creates significant aerodynamic drag. Expect the highway fuel economy to drop considerably when towing, or even when battling a strong headwind. The 3.5L EcoBoost engine delivers ample power, but it still needs to work hard to move the Navigator’s substantial weight, particularly when accelerating or climbing hills. Because it’s a turbocharged engine, aggressive use of the throttle can significantly reduce fuel economy in either city or highway driving.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2015 Lincoln Navigator 4WD at exactly $2,600. This figure is based on driving 15,000 miles per year, with 55% of those miles driven in the city and 45% on the highway, using national average fuel prices. Keep in mind that fuel prices fluctuate, and your actual mileage may vary depending on your driving habits and conditions. However, $2,600 is a good baseline for budgeting fuel expenses for this vehicle.

If you drive more than 15,000 miles per year, or if fuel prices in your area are higher than the national average, you can expect to spend significantly more.

Real-world expectations

While the EPA estimates provide a standardized benchmark, real-world fuel economy often differs. Navigator owners report seeing numbers slightly below the EPA estimates, especially in mixed driving conditions. Factors such as driving style, traffic congestion, terrain, and even tire pressure can have an impact. Aggressive acceleration, frequent braking, and extended idling will all negatively affect fuel economy.

Similarly, driving in hilly or mountainous areas will require more fuel than driving on flat terrain. The age and condition of the vehicle itself can also play a role. A well-maintained Navigator with properly inflated tires will generally achieve better fuel economy than one that is neglected.

How it compares

The 2015 Navigator’s fuel economy is predictably less impressive than some of its competitors. The Cadillac Escalade, with its 6.2L V8, is similarly thirsty, hovering around 15 MPG combined for the 4WD version. The Infiniti QX80 also lands squarely in the same ballpark. These fuel economy numbers are important, because buyers are aware of the alternatives, even if they consciously choose the Navigator despite its relatively unimpressive MPG.

Modern three-row crossovers like the Acura MDX (around 21 MPG combined) offer significantly better fuel economy, but lack the Navigator’s towing capacity and reliable, truck-based construction. Even newer, more efficient full-size SUVs, like the Ford Expedition with its EcoBoost engine (around 19 MPG), demonstrate a modest improvement, but the Navigator buyer isn’t solely focused on efficiency. For a specific overview, check NAVIGATOR MPG across all years.

Tips to maximize efficiency

Avoid aggressive acceleration and hard braking. The 3.5L EcoBoost engine delivers plenty of torque, so you don’t need to floor it to get up to speed. Gentle acceleration and smooth braking will conserve fuel and reduce wear on your tires and brakes. Anticipate traffic conditions and adjust your speed accordingly to minimize the need for sudden stops.

Maintain proper tire inflation. Underinflated tires create more rolling resistance, which reduces fuel economy. Check your tire pressure regularly and inflate your tires to the recommended pressure listed on the doorjamb sticker. Proper tire inflation also improves handling and extends tire life.

Reduce unnecessary weight. The heavier the vehicle, the more fuel it consumes. Remove any unnecessary items from the vehicle, such as tools, sports equipment, or other cargo. Even small amounts of weight can add up and negatively affect fuel economy.

Avoid prolonged idling. Idling consumes fuel without moving the vehicle. If you’re going to be stopped for more than a minute or two, turn off the engine. Restarting the engine consumes only a small amount of fuel compared to the amount consumed by idling.

Consider using cruise control on the highway. Cruise control helps maintain a consistent speed, which can improve fuel economy. However, avoid using cruise control in hilly or mountainous areas, as the vehicle may downshift frequently, which consumes more fuel. For all Lincoln fuel economy data, review the latest official ratings.