The 2019 Mercedes-Benz GLE400 4matic achieves 20 MPG combined, a figure that’s acceptable rather than exceptional. This isn’t a hybrid or a stripped-down economy model. It’s a refined luxury SUV designed for families who prioritize comfort, technology, and the Mercedes-Benz brand. For them, 20 MPG is what it costs to get the experience they want.

City and highway performance

EPA estimates suggest the GLE400 gets 17 MPG in the city and 23 MPG on the highway. The city figure reflects stop-and-go traffic, where the 3.0L V6 works hard to move the vehicle’s weight. On the highway, the smooth-shifting 9-speed automatic transmission shifts into higher gears, letting the engine use less fuel. These numbers accurately show the fuel consumption for suburban families, professionals, or anyone who commutes and takes road trips.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2019 Mercedes-Benz GLE400 4matic is about $2,900. This is based on driving 15,000 miles per year and assumes average fuel prices. Drivers who drive more or less will see that number change. Premium fuel is recommended for best performance, which could add to the overall cost. This $2,900 figure gives potential owners a benchmark for the running costs of this model. Looking at GLE400 MPG across all years can help owners see how the model’s efficiency has changed over time.

Real-world expectations

EPA estimates are a standard, but real-world fuel economy changes with driving habits, terrain, weather, and maintenance. Drivers who accelerate quickly, take short trips, or frequently accelerate hard will likely see numbers below the EPA estimates. However, drivers who mainly drive on the highway at moderate speeds and accelerate and brake gently can often get numbers close to, or even slightly exceeding, the 23 MPG highway rating.

How it compares

The 2019 GLE400’s fuel economy is near the middle of the pack for mid-size luxury SUVs. The BMW X5 xDrive40i, with its 3.0L turbocharged inline-six, gets a similar 22 MPG combined. The Audi Q7, with a 3.0L supercharged V6, also has similar numbers to the GLE400. The Mercedes is slightly less fuel-efficient than the Lexus RX 350, which gets about 23 MPG combined with its V6 engine. Buyers can look at all Mercedes Benz fuel economy data to compare the GLE400 with other models.

Tips to maximize efficiency

Accelerating gently will improve fuel economy. The GLE400’s 3.0L V6 makes plenty of torque, so avoid fast starts and keep a steady pace to use less fuel. Accelerate slowly and anticipate traffic to save fuel, and avoid unnecessary hard stops.

Proper tire inflation is critical for rolling resistance. Check the tire pressure against the recommended specifications on the driver’s side doorjamb and inflate them. Underinflated tires increase drag, making the engine work harder and use more fuel. Get a reliable tire pressure gauge and check the tires monthly.

Reducing aerodynamic drag can save fuel, especially on the highway. Avoid using roof racks or cargo carriers unless necessary, as they increase wind resistance. If you need to carry items on the roof, choose a streamlined carrier and remove it when not in use to reduce the burden on the engine.

Regular maintenance is important for fuel efficiency. Make sure the engine air filter is clean for airflow. A clogged air filter restricts airflow, causing the engine to work harder and burn more fuel. Follow the maintenance schedule, including oil changes and spark plug replacements, to keep the engine running efficiently.