14 MPG combined. If that number bothers you, the 2024 Mercedes-Benz AMG G63 is not for you. This is a vehicle purchased for its imposing presence, powerful acceleration, and off-road capability, not its fuel efficiency. The G63 is a statement, a rolling show of excess, and its fuel consumption is part of that. Its owners are often more concerned with the quality of the leather and the roar of the exhaust than their trips to the gas station.

City and highway performance

The EPA’s ratings for the AMG G63 are 13 MPG in the city and 16 MPG on the highway. These numbers reflect the challenges of moving a vehicle shaped like a brick and weighing nearly three tons. The 4.0-liter twin-turbo V8 engine produces 577 horsepower and 627 lb-ft of torque, requiring a lot of fuel to move the G63’s weight and overcome its poor aerodynamics. Expect the city figure to drop further in stop-and-go traffic, while achieving the highway number requires a light foot and limited acceleration. The 9-speed automatic transmission tries to optimize efficiency, but it’s fighting physics.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2024 Mercedes-Benz AMG G63 is $4,150. This assumes 15,000 miles of driving per year, with a 55/45 split between city and highway mileage, calculated using national average fuel prices. Premium fuel is required, so gasoline price changes can significantly impact this figure. For those who drive more aggressively, or live in areas with high fuel costs, the actual annual expense could exceed this estimate. Most G63 owners accept it as the cost of owning this exclusive car.

Real-world expectations

The EPA provides a standard, but real-world fuel economy for the AMG G63 often falls short of the official figures. Expect to see numbers closer to 11-12 MPG in mixed driving, especially if you use the engine’s power. Short trips around town will consume significant fuel while the engine warms up. Long highway trips with careful throttle inputs might approach the EPA’s 16 MPG rating, but resisting the urge to pass slower traffic is hard in this capable machine. Factors like tire pressure, driving style, and air conditioning can all impact fuel consumption.

How it compares

The AMG G63 has few rivals, but still faces competition. A Land Rover Range Rover with the supercharged V8 will likely achieve similar or worse fuel economy. The Cadillac Escalade V, with its 682-horsepower supercharged V8, offers comparable performance and luxury, and expects to achieve similar MPG figures in the low teens. Even the less powerful versions of the G-Wagen, like the G550, don’t offer dramatically improved fuel economy, typically hovering around 16-17 MPG combined. This shows that buyers consider all Mercedes Benz fuel economy data, but generally prioritize other factors when choosing a G-Class. Exploring AMG MPG across all years shows performance is more important than fuel economy.

Tips to maximize efficiency

G63 owners may not prioritize saving fuel, but there are steps to improve efficiency. Avoid aggressive acceleration and hard braking, as these driving habits increase fuel consumption. Use cruise control on the highway to maintain a consistent speed and minimize throttle changes.

Ensure your tires are properly inflated, as under-inflated tires increase rolling resistance and reduce fuel economy. Check your tire pressure regularly and adjust as needed, paying attention to the recommended pressure level on the doorjamb sticker. Consider using Eco mode if available, as it may adjust the throttle response and transmission mapping to prioritize fuel efficiency, reducing the vehicle’s performance.

Minimize idling time, as a running engine consumes fuel when the vehicle is stationary. If you’re going to be stopped for more than a minute or two, turn off the engine. Reduce unnecessary weight by removing any items from the vehicle that aren’t needed, as excess weight increases fuel consumption. The G63 is already heavy.

Plan your routes carefully to avoid congested areas and stop-and-go traffic. Choose routes with fewer hills and fewer stops. Finally, keep up with regular maintenance, including oil changes and air filter replacements, as these tasks ensure the engine runs efficiently.