16 MPG combined. The 2022 Mercedes-Benz AMG GLE63 S 4Matic+ isn’t purchased primarily for its fuel efficiency. This is a high-performance SUV, a snarling speed and luxury machine. The target customer prioritizes fast acceleration, handcrafted interiors, and the unmistakable AMG roar over saving money at the pump. Fuel economy is a secondary consideration, if that. They want performance and luxury, and the GLE63 S delivers that for a price.

City and highway performance

The EPA estimates 15 MPG in the city and 19 MPG on the highway. These figures reflect the inherent compromises within a high-performance vehicle. The city number suffers from stop-and-go driving, where the powerful 4.0L V8 engine and its twin turbos are constantly called upon to move the heavy SUV from a standstill. The highway number, although better, is still affected by the vehicle’s aerodynamic profile and the need to overcome wind resistance at higher speeds. The 9-speed automatic transmission helps, keeping the engine in its most efficient range when cruising, but ultimately, physics and the engine’s output win.

Annual fuel cost

According to the EPA, the annual fuel cost for the 2022 Mercedes-Benz AMG GLE63 S 4Matic+ is $3,600. This figure is based on driving 15,000 miles per year, with 45% of those miles driven in the city and 55% on the highway. The calculation also assumes national average fuel prices, which fluctuate considerably. For owners driving predominantly in the city, or those who frequently use the engine’s power, the actual fuel cost could easily exceed this estimate. It’s a price many are willing to pay to enjoy the full AMG experience.

Real-world expectations

The EPA provides a standardized estimate, but real-world fuel economy will vary drastically based on driving style and conditions. Drivers who frequently test the GLE63 S’s immense power will likely see figures well below the EPA estimates. Aggressive acceleration, frequent use of Sport or Sport+ driving modes, and extended periods of idling in traffic will all contribute to lower fuel economy. However, a driver who adopts a more conservative driving style, minimizing hard acceleration and maximizing highway cruising, might be able to achieve figures closer to the EPA ratings. Even under optimized conditions, extracting significantly better fuel economy than the EPA estimates is unlikely.

How it compares

Compared to its rivals, the 2022 AMG GLE63 S’s fuel economy is in the expected range for its class. The BMW X5 M Competition, with its 617-hp twin-turbo V8, achieves a similar 15 MPG combined. The Land Rover Range Rover Sport SVR, boasting a supercharged V8, also hovers around the same mark. Even the Porsche Cayenne Turbo, with its focus on performance, barely edges out the GLE63 S. This comparison matters because these buyers often shop these high-performance SUVs against each other. Fuel economy is rarely the deciding factor. If you’re looking for better mileage, check out all Mercedes Benz fuel economy data, or narrow it down to AMG MPG across all years.

Tips to maximize efficiency

The AMG GLE63 S isn’t designed for hypermiling, but adopting a few driving habits can improve fuel economy.

Avoid aggressive acceleration and hard braking. The powerful engine delivers ample torque even at moderate throttle inputs. Smooth acceleration will minimize fuel consumption.

Use the Comfort driving mode when possible. This mode optimizes the engine and transmission settings for efficiency, softening throttle response and encouraging earlier upshifts. It might slightly diminish the SUV’s sporty character, but it can improve fuel economy in everyday driving.

Ensure proper tire inflation. Underinflated tires increase rolling resistance, making the engine work harder and consuming more fuel. Regularly check your tire pressure and maintain it at the recommended level. Find the recommended level on the driver’s side doorjamb or in the owner’s manual.

Minimize idling. Idling consumes fuel without covering any distance. Turn off the engine if you anticipate a long wait, such as at a long traffic light or while waiting in a parking lot. The GLE63 S’s engine restarts quickly.

Service your vehicle according to the manufacturer’s recommendations, paying particular attention to engine air filters and spark plugs. A clean air filter ensures optimal airflow to the engine, and properly functioning spark plugs ensure efficient combustion. Ignoring these maintenance items can negatively impact fuel economy.