17 MPG combined isn’t going to win any fuel economy awards, but that’s hardly the point of the 2024 Mercedes-Benz AMG GT 63 4matic Plus. This is a fire-breathing, handcrafted machine, a four-door coupe that prioritizes performance and head-turning style over careful fuel consumption. Buyers aren’t cross-shopping this with a Prius, or even a GLE 350. They are drawn to the raw power and opulent luxury this particular AMG delivers, and are fully aware of the trade-offs involved.

City and highway performance

The EPA estimates put the AMG GT 63 at 15 MPG in the city and 21 MPG on the highway. The city figure, reflecting stop-and-go traffic and frequent acceleration, is where you’ll likely see the biggest dent in your wallet. The powerful 4.0L V8, even with its advanced cylinder deactivation technology, needs to work hard to overcome the car’s considerable weight in urban environments.

On the open road, the 21 MPG highway rating is more palatable, particularly on long cruises where the engine can settle into a more efficient rhythm. However, aggressive acceleration, even on the highway, will quickly diminish that figure.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2024 Mercedes-AMG GT 63 4matic Plus at exactly $3,400. This figure is based on driving 15,000 miles per year, split roughly 55% city and 45% highway, and using the national average fuel price for premium gasoline, which this AMG demands. It’s a significant sum, certainly more than the average vehicle owner spends, but it’s arguably the price of admission for the level of performance and exclusivity that this car provides.

Real-world expectations

While the EPA provides a standardized benchmark, real-world fuel economy for the AMG GT 63 will vary considerably based on driving style and conditions. Someone who frequently indulges in the car’s prodigious acceleration and spends most of their time navigating congested city streets will likely see numbers below the EPA estimates. Conversely, a driver who spends more time on the highway and adopts a gentler driving style *might* get closer to, or even slightly exceed, the 21 MPG highway figure. However, it’s safe to say that consistently achieving the EPA combined rating requires a conscious effort to drive conservatively, which probably isn’t why most people buy this car. Check AMG MPG across all years for more information.

How it compares

Compared to other high-performance four-door coupes, the AMG GT 63’s fuel economy is largely on par with its rivals, but with variance across each competitor. The Porsche Panamera Turbo S, while offering similar levels of performance, achieves around 17 MPG combined. The BMW M8 Gran Coupe, another strong competitor, also sits around the 17 MPG combined mark. Even all-electric models like the Porsche Taycan Turbo S, although vastly more efficient in urban environments, can see their range significantly impacted by aggressive driving and high-speed cruising, thus, for a similar experience it could have a similar cost.

Tips to maximize efficiency

Take advantage of the AMG GT 63’s drive modes. Selecting “Comfort” or “Eco” modes will remap the throttle response and shift points to prioritize fuel efficiency over outright performance. This won’t transform the car into a fuel sipper, but it can make a noticeable difference in everyday driving, especially in stop-and-go traffic.

Avoid aggressive acceleration and braking. The harder you push the engine, the more fuel it consumes. Smooth, deliberate inputs will help you conserve fuel and maintain a more consistent speed, especially on the highway. Gradual acceleration and anticipating traffic flow helps minimize unnecessary braking and recaptures energy into the system during deceleration.

Ensure your tires are properly inflated. Underinflated tires increase rolling resistance, which reduces fuel economy. Check your tire pressure regularly and inflate them to the recommended level, which can typically be found on a sticker inside the driver’s side door jamb. This simple maintenance task can improve fuel efficiency and extend the life of your tires.

Minimize unnecessary weight. Carrying extra weight in your car, whether it’s from cargo or passengers, increases the amount of energy required to move it. Remove any unnecessary items from your trunk and passenger compartment to reduce the load on the engine and improve fuel economy. Review all Mercedes Benz fuel economy data.

Consider using the cylinder deactivation feature carefully. While the system shuts down four cylinders under light load, its effectiveness depends on driving conditions. It’s most beneficial during steady-state cruising on the highway. A more aggressive driving style effectively negates any potential savings from this feature.