The 2017 Mercedes-Benz GLE350 4matic with the 3.5L V6 gets 19 MPG combined. While a Prius owner might shudder, GLE350 buyers often find it’s an acceptable trade-off for the luxury, space, and perceived safety this mid-size SUV provides. These buyers typically prioritize effortless power, a comfortable ride, and the prestige of Mercedes over outright fuel efficiency. They need a versatile vehicle for errands, family duties, and occasional road trips, and the GLE350 largely delivers on those promises, even if it’s not winning any hypermiling competitions.

City and highway performance

The EPA estimates 18 MPG in the city and 22 MPG on the highway for the 2017 GLE350 4matic. The city rating reflects stop-and-go driving, where the GLE350’s hefty weight and the need to accelerate from a standstill affect mileage. The 22 MPG highway figure is more achievable during steady cruising, but expect it to drop if you frequently exceed speed limits or encounter hilly terrain. The 7-speed automatic transmission is generally smooth and responsive, but it’s not specifically geared towards maximizing fuel economy like some competitors’ more modern transmissions with more gears.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2017 Mercedes-Benz GLE350 4matic at $3,050. This figure is based on driving 15,000 miles per year and using national average fuel prices. Note that premium fuel is recommended for optimal performance, which will further contribute to the overall cost. While $3,050 per year might seem high, it’s a realistic expectation for a vehicle in this class and with this level of performance. Buyers often factor this cost into their overall ownership calculations.

Real-world expectations

While the EPA estimates offer a benchmark, real-world fuel economy often differs. Expect to see figures closer to the EPA’s estimates if you primarily drive on the highway with a light foot. However, if your daily commute involves heavy traffic or you drive aggressively, you might find yourself closer to the city MPG rating, or even slightly below. Factors like tire pressure, vehicle maintenance, and the use of accessories like air conditioning also play a role. Those considering a GLE350 should research GLE350 MPG across all years to get a broader sense of owner experiences.

How it compares

The 2017 GLE350’s fuel economy is unremarkable compared to its peers. A BMW X5 xDrive35i from the same year, with its turbocharged inline-six, manages around 20 MPG combined. The Acura MDX, known for its efficiency, achieves nearly 22 MPG combined, making it significantly more economical. Even the Volvo XC90 T6, with its supercharged and turbocharged four-cylinder engine, gets around 22 MPG combined, bettering the GLE350. For some buyers, the GLE350’s V6 engine and Mercedes-Benz brand outweigh the slight fuel economy disadvantage. You can review all Mercedes Benz fuel economy data on our site.

Tips to maximize efficiency

Gentle acceleration and braking are important for conserving fuel in the GLE350. Avoid aggressive starts and anticipate traffic flow to minimize unnecessary braking. The GLE350’s weight requires more energy to get moving and stop, so a smooth driving style will make a difference.

Ensure your tires are properly inflated to the recommended pressure. Underinflated tires increase rolling resistance, forcing the engine to work harder and consume more fuel. Check your tire pressure regularly, especially during temperature changes.

Minimize idling time. If you’re stopped for more than a minute, turn off the engine. Modern engines are designed to restart quickly and efficiently, and idling consumes fuel without covering any distance.

Reduce unnecessary weight by removing items from the vehicle that you don’t need, as excess weight impacts fuel economy. Keeping the cargo area clear of clutter can contribute to a small but measurable improvement.

Consider using cruise control on the highway to maintain a consistent speed. This can help optimize fuel consumption, especially on long drives where speed fluctuations are likely. However, be sure to disengage cruise control in hilly terrain or heavy traffic where it can be less efficient.