18 MPG combined isn’t going to win any fuel-sipping awards, but for the 2018 Mercedes-Benz AMG GT S Coupe, it’s almost beside the point. This car exists to deliver a visceral driving experience above all else. Fuel efficiency is a distant consideration for the buyer who prioritizes the thunderous roar of a hand-built 4.0L V8 and the precision handling that comes with AMG engineering. This driver appreciates the finer things, someone who likely owns multiple vehicles and chooses the GT S Coupe specifically for the thrill it provides, rather than as a daily commuter.

City and highway performance

Driving the AMG GT S Coupe in the city isn’t about efficiency; it’s about controlled bursts of power and the unmistakable presence it commands. The EPA estimates 16 MPG in city driving, which reflects the stop-and-go conditions that plague urban environments. Expect that number to fluctuate wildly based on your driving style.

The 22 MPG highway figure is more realistic for sustained cruising, but even then, the temptation to exploit the V8’s strong torque can quickly diminish fuel economy. This isn’t a car built for gentle highway meandering; it’s built for attacking apexes and dominating the open road.

Annual fuel cost

The EPA calculates the annual fuel cost for the 2018 Mercedes-Benz AMG GT S Coupe at approximately $3,200. This estimate is based on driving 15,000 miles per year, with a mix of city and highway driving, using national average fuel prices. Of course, premium fuel is required for this high-performance engine, meaning the per-gallon cost will always be higher than regular unleaded. This figure provides a general guideline, but individual driving habits and local fuel prices will significantly impact the actual cost. It’s money well spent for the right buyer.

Real-world expectations

Those considering an AMG GT S Coupe should be realistic about fuel consumption. Enthusiastic driving will invariably lead to lower MPG figures than the EPA estimates. Expect to see something closer to 13-14 MPG in spirited city driving and potentially surpass 22 MPG on long highway trips if you practice restraint. The AMG GT S Coupe rewards smooth inputs and anticipation. Harsh acceleration and constant braking will punish fuel economy, but also provide the thrills this car was engineered to provide.

How it compares

When compared to other high-performance coupes, the fuel economy of the 2018 AMG GT S Coupe is about what you’d expect. A Porsche 911 Carrera S, for example, achieves around 21 MPG combined. The Jaguar F-TYPE R Coupe gets roughly 18 MPG combined, virtually identical to the AMG GT S. Meanwhile, the Audi R8 V10 Coupe is rated at 16 MPG combined, making it one of the thirstier options in this segment. The comparison is important because it highlights that efficiency isn’t the priority, with virtually all of these performance cars costing more for fuel. These vehicles, including this one, are about delivering performance above all else. Consumers can review all Mercedes Benz fuel economy data on this site, as well as AMG MPG across all years.

Tips to maximize efficiency

While outright fuel efficiency might not be the primary concern for AMG GT S Coupe owners, there are strategies to optimize fuel consumption without sacrificing too much driving enjoyment. Avoid aggressive acceleration and braking. The AMG GT S Coupe’s potent engine delivers ample power, even with moderate throttle inputs. Smooth and progressive acceleration will significantly reduce fuel consumption.

Pay attention to tire pressures. Properly inflated tires reduce rolling resistance, improving overall fuel economy. Consult the vehicle’s door jamb sticker for the recommended tire pressure and check them regularly.

Use the car’s driving modes. The AMG GT S Coupe typically offers Comfort and Eco modes that prioritize fuel efficiency by modifying throttle response and transmission behavior. These modes could be used when the car is performing daily driving tasks such as commuting.

Keep the vehicle well-maintained. Regular servicing, including oil changes and air filter replacements, ensures the engine operates at peak efficiency. A healthy engine burns fuel more cleanly and efficiently.

Plan your routes strategically. Avoiding congested areas and stop-and-go traffic can substantially improve fuel economy. Where possible, opt for routes that allow for consistent cruising speeds.