The 2018 Mercedes-Benz AMG G63 gets 13 MPG combined. It’s not a vehicle designed for fuel efficiency, but a heavy vehicle powered by a hand-built, twin-turbocharged V8. Despite its apparent impracticality, it appeals to buyers who prioritize presence and performance. These buyers aren’t cross-shopping with a Prius. They want the G63’s style and off-road capability, a reputation developed from military use and evolved into a symbol of luxury.

City and highway performance

The EPA estimates the 2018 AMG G63 gets 12 MPG in the city and 15 MPG on the highway. Treat these numbers as estimates. The G63’s power and its boxy shape lead to aggressive driving. In stop-and-go traffic, its weight and turbo response mean high fuel consumption. Highway cruising is slightly better, but maintaining speed is hard when you want to experience the V8’s power. The seven-speed automatic transmission is focused on delivering power, not fuel economy.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2018 Mercedes-Benz AMG G63 to be $4,450. This figure is based on driving 15,000 miles per year and using the national average fuel price when the EPA tested it. This cost reflects the G63’s buyers, who are not concerned about fuel prices when buying a luxury SUV.

Real-world expectations

Do not expect to consistently achieve the EPA figures. Real-world MPG will vary based on driving style, traffic, and route. Owners who drive aggressively or in congested cities will likely see single-digit numbers. Even careful drivers should lower their expectations. The G63 is not designed for fuel efficiency. Consider it a cost of owning a vehicle that can handle roads and off-road trails.

How it compares

The 2018 AMG G63’s fuel economy is not important to buyers. The Land Rover Range Rover Supercharged, with its 5.0L V8, gets an EPA-estimated 16 MPG combined. The Cadillac Escalade gets around 17 MPG combined with its 6.2L V8. The Porsche Cayenne Turbo gets 17 MPG combined. These alternatives offer slightly better fuel economy, but none have the G63’s style. Buyers prioritizing fuel efficiency may consider all Mercedes Benz fuel economy data before a G-Wagen. However, those who like the G63’s luxury, capability, and style often accept slightly worse fuel economy.

Tips to maximize efficiency

Reducing fuel consumption in an AMG G63 requires being aware of the vehicle’s nature. Gentle acceleration and braking can help. Avoid aggressive launches and hard stops, as these increase fuel usage.

Reduce idling time. The G63 consumes a lot of fuel when stationary, especially with the engine running. Turn off the engine if you will be waiting, such as at a long light or making phone calls.

Regular maintenance is important. Ensure the engine is tuned and that tires are inflated. A maintained engine is more efficient, and proper tire pressure reduces rolling resistance, improving fuel economy.

Consider using the “Comfort” driving mode. It will soften throttle response and shift points, encouraging a relaxed driving style. This is not the same as checking your AMG MPG across all years, though.