16 MPG combined isn’t a number the average consumer associates with lower fuel costs, but for the 2026 Mercedes-Benz AMG GT 63 4Matic Plus Coupe, it represents a remarkable feat of engineering. This 4.0L twin-turbocharged V8, a powerhouse generating 630 horsepower, is a vehicle built not for thrift, but for raw, unadulterated performance and a driving experience that electrifies the senses. It’s a statement of intent, a visceral connection to the road that few cars can offer, and the fuel economy, while not segment-leading, is accepted by its clientele as a necessary ingredient in that high-octane recipe.

City and highway performance

The EPA rates the AMG GT 63 Coupe at 14 MPG in the city and 20 MPG on the highway. These figures are, frankly, respectable given the engine’s prodigious output and the car’s substantial curb weight. In urban environments, the 4.0L V8, paired with the AMG Speedshift MCT 9-speed automatic transmission, works hard. Stop-and-go traffic means the turbos are constantly spooling, and the sheer inertia of moving a performance-oriented grand tourer repeatedly from rest takes its toll. Highway cruising, however, presents a different picture. The tall ninth gear allows the engine to lope along at surprisingly low RPMs, and the aerodynamic slipperiness of the coupe body, combined with the V8’s ample torque at cruising speeds, pushes the mileage closer to the 20 MPG mark. This isn’t a segment where buyers are pinching pennies at the pump, but even they appreciate the extended range on a highway blast.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2026 Mercedes-Benz AMG GT 63 4Matic Plus Coupe to be $3,600. This figure is calculated based on 15,000 miles of annual driving, with a blend of 55% city and 45% highway driving, using national average fuel prices. For a vehicle of this caliber, intended for spirited drives and not necessarily daily commuting for most owners, this $3,600 represents a predictable expense. The individual purchasing an AMG GT 63 Coupe understands that premium performance comes with premium operating costs. The cost of fuel falls well within their budget, particularly when considering the price of tires, insurance, and routine maintenance for a high-performance luxury machine. It’s simply one of the costs of ownership for a world-class performance car.

Real-world expectations

Real-world fuel economy for the AMG GT 63 Coupe typically hovers around the EPA combined estimate, often slightly below, depending entirely on the driver’s throttle discipline. This vehicle is built to be driven hard, and its character strongly encourages just that. Every blip of the throttle, every explosive launch, every exhilarating run through the gears means more fuel consumed. Owners of this car aren’t buying it to hypermile, they buy it to experience an adrenaline rush. When driven with restraint, the 20 MPG highway is genuinely achievable, making longer journeys surprisingly palatable. But the intoxicating growl of the V8, the instant surge of torque, and the immense capability of the chassis are continuous temptations. Those who regularly exploit the car’s full potential will see their average closer to the city rating, or even lower, and they will do so with a knowing grin.

How it compares

The AMG GT 63 Coupe occupies a competitive space, but its unique four-door coupe body style within an exclusive performance platform sets it apart. Consider a direct rival like the Porsche Panamera Turbo S E-Hybrid, which, while offering significantly better combined efficiency due to its plug-in hybrid powertrain (around 20 MPG combined on gasoline once the battery is depleted), also carries a higher base price and a different overall character. An Aston Martin DB12, focusing purely on grand touring luxury and performance, achieves around 17 MPG combined, slightly edging out the AMG, but lacks the same level of practicality the AMG GT 4-door offers. Even within its own stable, comparing the AMG GT 63 Coupe to, say, a C 63 S E Performance sedan with its 27 MPG equivalent might seem stark, but that car uses a four-cylinder hybrid powertrain with a very different personality. Buyers for the AMG GT 63 Coupe are specifically after the muscular V8 driving experience and the sleek lines of the dedicated GT platform. They’re willing to accept the 16 MPG combined figure because it’s a consequence of the power and character they demand. For more information on all Mercedes Benz fuel economy data, you can explore our extensive database.

Tips to maximize efficiency

While outright efficiency isn’t the primary goal for AMG GT 63 Coupe owners, a few practices can help optimize the 4.0L V8’s fuel burn when the mood strikes for a more relaxed drive.

Engaging the “Comfort” drive mode significantly softens throttle response and prioritizes earlier, smoother gear changes, allowing the transmission to reach its higher gears sooner and reduce engine RPMs, especially during light-throttle acceleration and steady-state cruising. This mode also often adjusts suspension settings for a more compliant ride, which indirectly discourages aggressive driving inputs.

Use the “Sailing” or “Gliding” function when available. In certain drive modes and under specific conditions, the AMG GT’s powertrain can decouple the engine from the drivetrain when you lift off the accelerator, allowing the car to coast longer and preserve momentum without engine braking, which can save a surprising amount of fuel on long, gentle descents or flat stretches.

Maintain consistent tire pressures. High-performance tires on a car like the AMG GT 63 are critical for handling, but correctly inflated tires (to the vehicle’s recommended specifications) also reduce rolling resistance, which translates directly to improved fuel economy. Check them regularly, as even slight underinflation can negatively impact MPG and tire wear.

Smooth, progressive driving inputs make a substantial difference. Avoid sudden acceleration and hard braking. The AMG GT 63 is capable of both, but modulating your throttle and brake application to anticipate traffic and maintain a steady pace will prevent the engine from working harder than necessary to overcome rapid changes in speed. For specific details on AMG MPG across all years, our database provides comprehensive figures.