18 MPG combined is a figure unlikely to deter those shopping for a 2017 Mercedes-Benz AMG GT S. This isn’t a practical commuter car; it’s a hand-built performance machine designed to thrill, and the fuel economy reflects that fact. Buyers of the AMG GT S are more concerned with its explosive acceleration, track-honed handling, and unmistakable road presence than its trips to the gas station.

City and highway performance

The AMG GT S, equipped with a 4.0L twin-turbocharged V8 and a seven-speed automatic transmission (AM7), delivers an EPA-estimated 16 MPG in the city and 22 MPG on the highway. The city figure reflects the realities of stop-and-go driving, where the powerful engine constantly cycles through acceleration and deceleration. The 22 MPG highway figure suggests the engine is more efficient in steady-state conditions, but even then, the allure of unleashing the V8’s power often leads to more spirited driving and, consequently, lower fuel economy.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2017 Mercedes-Benz AMG GT S at $3,200. This figure is based on driving 15,000 miles per year and using national average fuel prices. Premium fuel is required for optimal performance, and fluctuations in gas prices can significantly impact this figure. Ultimately, this cost is a relatively small price to pay for the visceral experience the AMG GT S provides, a cost most owners readily absorb.

Real-world expectations

While the EPA estimates provide a baseline, real-world fuel economy for the AMG GT S often falls below the official numbers. Aggressive driving, frequent use of the sport modes, and time spent idling in traffic will all contribute to lower MPG. Owners who prioritize performance over efficiency should expect to see numbers closer to the 14-16 MPG range in mixed driving. Few owners will complain, content to embrace the car’s raw edge.

How it compares

Compared to other high-performance sports cars of its era, the 2017 AMG GT S sits roughly in the same fuel consumption ballpark. The Porsche 911 Carrera S, for example, achieves around 22 MPG combined, a modest improvement. The Jaguar F-TYPE R Coupe returns a similar combined figure of 18 MPG. Opting for the BMW M6 Gran Coupe offers close to the same performance but achieves approximately 17 MPG combined. The fact that the AMG GT S is not a standout in fuel efficiency is not a deterrent for its target demographic. Buyers of these vehicles are willing to trade fuel savings for the performance, prestige, and unique driving experience each car offers. For those intrigued by the Mercedes Benz brand, you can see all Mercedes Benz fuel economy data on the FuelEconomyHub.

Tips to maximize efficiency

Understand the driving modes and use them carefully. The “Comfort” mode softens the throttle response and optimizes the transmission for fuel efficiency. Resist the temptation to constantly use “Sport” or “Sport+” modes around town, saving them for when you truly want to experience the car’s full potential.

Anticipate traffic flow to avoid unnecessary acceleration and braking. Smooth, consistent driving is the key to maximizing fuel economy in any vehicle, but especially in a high-performance car like the AMG GT S, where aggressive driving habits can have a significant impact on MPG.

Ensure your tires are properly inflated. Underinflated tires increase rolling resistance, which reduces fuel efficiency. Check your tire pressure regularly and inflate them to the recommended levels, which can be found on the driver’s side doorjamb.

Keep up with regular maintenance. A well-maintained engine runs more efficiently. Follow the manufacturer’s recommended service schedule, including oil changes, spark plug replacements, and air filter replacements. Remember to also browse the AMG MPG across all years.

Minimize idling time. Idling wastes fuel. If you’re stopped for more than a minute, turn off the engine. This is especially important in a large-displacement engine, as it burns a significant amount of fuel even when stationary.