22 MPG combined will probably elicit a shrug from the typical 2021 Mercedes-Benz GLE350 4matic buyer. They aren’t cross-shopping solely on fuel economy; they’re prioritizing a luxury experience, a commanding presence, and the cachet that comes with the three-pointed star. This version of the GLE350, with its 2.0L turbocharged four-cylinder engine, tries to blend efficiency with the expected Mercedes-Benz refinement. A mid-20s MPG represents a tradeoff they accept for the prestige and practicality the GLE350 4matic brings.

City and highway performance

The EPA estimates suggest 19 MPG in city driving and 26 MPG on the highway. The city figure reflects the stop-and-go nature of urban environments, where the GLE350’s weight works against the relatively small engine. The 9-speed automatic transmission does its best to keep the engine in its optimal rev range. Highway performance, at 26 MPG, is more respectable and attainable if you maintain a moderate speed. This figure is adequate for long road trips, especially considering the GLE’s comfort and spaciousness, however aggressive driving will quickly degrade the numbers.

Annual fuel cost

According to the EPA, the annual fuel cost for the 2021 Mercedes-Benz GLE350 4matic is estimated at $2,650. This is based on driving 15,000 miles per year, with a mix of city and highway driving, using the national average fuel price. Keep in mind this number is fluid, as fluctuations in gasoline prices will directly impact this figure. If you drive considerably more or less than 15,000 miles annually, or if fuel prices spike, your actual cost could be significantly different.

Real-world expectations

While the EPA provides a standardized baseline, real-world fuel economy can vary widely depending on driving habits, road conditions, and even the weather. Aggressive acceleration, frequent braking, and high speeds will all negatively impact fuel efficiency. You can probably expect numbers near the EPA ratings in optimal conditions, but don’t be surprised to see slightly lower figures in everyday driving.

How it compares

Compared to other luxury SUVs in its class, the GLE350 4matic’s fuel economy is middle-of-the-road. The BMW X5 sDrive40i, with its inline-six engine, achieves around 21 MPG combined. The Acura MDX, known for its reliability and value, hovers around 22 MPG combined, similar to the GLE350. The Volvo XC90 T6, also with a four-cylinder engine but supercharged and turbocharged, gets around 22 MPG combined as well. These numbers reveal the price of admission into this SUV segment.

Some may prefer more frugal options, but the slight MPG differences barely move the needle. Drivers choose the GLE for its aura of prestige and overall performance, not its class-leading fuel economy. Explore all Mercedes Benz fuel economy data for more comparisons.

Tips to maximize efficiency

Take advantage of the GLE350’s drive modes. Selecting “Eco” mode will soften throttle response and optimize shift points for fuel efficiency. While it may slightly dampen performance, it can make a noticeable difference in MPG, especially during city driving where opportunities for gradual acceleration abound.

Proper tire inflation plays a crucial role in fuel economy. Ensure your tires are inflated to the recommended pressure, which can be found on the driver’s side doorjamb or in the owner’s manual. Under-inflated tires create more rolling resistance, forcing the engine to work harder and consume more fuel. Routine checks help keep your GLE350 running efficiently.

Anticipate traffic flow and practice smooth acceleration and braking. Avoid sudden bursts of speed or hard braking, as these actions waste fuel. Maintain a consistent speed and anticipate traffic lights or road hazards to minimize unnecessary braking and acceleration. Consider that the GLE350 MPG across all years may have variations based on model year.

Minimize idling. If you’re stopped for more than a minute or two, turn off the engine. Modern engines are designed to restart quickly and efficiently, and idling wastes fuel unnecessarily. Modern Mercedes-Benz models have auto start-stop functionality for this reason.

Reduce unnecessary weight, remove any extra cargo or items from the vehicle that are not needed. The lighter the vehicle, the less fuel it will consume. Consider a detailed cleaning to rid unnecessary items from the cabin and rear cargo area, as every little bit helps.