18 MPG combined is what you can expect from a 2016 Mercedes-Benz AMG S63 4matic Coupe. This isn’t a number that will attract buyers looking for lower fuel costs. It’s a figure that’s almost irrelevant to those drawn to the S63 Coupe for its strong acceleration, opulent features, and unmistakable presence, not its fuel efficiency.

City and highway performance

The EPA numbers show 15 MPG in the city and 23 MPG on the highway. The city figure reflects the S63’s weight and the inherent inefficiency of stop-and-go driving straining a twin-turbo V8. The highway number, while better, still isn’t great. This is a performance machine, and even with the relatively advanced 7-speed automatic transmission, aerodynamic efficiency isn’t prioritized over the imposing, muscular design. Expect these numbers to drop if you frequently unleash the engine’s power, which is something owners of this type of car tend to do.

Annual fuel cost

The EPA estimates an annual fuel cost of $3,200 for the 2016 AMG S63 Coupe. This calculation is based on driving 15,000 miles per year, with a mix of city and highway driving, at then-current national average fuel prices. This figure is a snapshot in time, and fluctuations in gasoline prices will directly affect your actual spending. Aggressive driving habits will likely increase your expenses. Consider it a benchmark, but one that’s prone to change.

Real-world expectations

Don’t expect to consistently achieve 18 MPG. In real-world conditions, especially with the spirited driving this car encourages, drivers are more likely to see numbers closer to the city rating, and sometimes even lower. The S63 Coupe’s character is defined by its explosive power, and resisting the urge to exploit that performance will be a constant challenge. Those who buy an AMG S63 Coupe mostly care about the experience and don’t worry much about saving money at the pump.

How it compares

The fuel economy of the 2016 AMG S63 4matic Coupe places it similarly to its competitors, give or take a mile per gallon. A 2016 BMW M6 Coupe, packing a 4.4L twin-turbo V8, gets similar EPA figures, at 17 MPG combined. The 2016 Cadillac CTS-V manages a slightly better 17 MPG combined, while boasting a monstrous 6.2L supercharged V8, due to other engineering choices. The Bentley Continental GT, which many owners would shop against the AMG S63 coupe, returns around 15 MPG combined, depending on the engine configuration. The relative MPG isn’t the deciding factor for buyers comparing these vehicles, it just gives an indication of expected cost. You can find all Mercedes Benz fuel economy data on this site.

Tips to maximize efficiency

Despite its performance-oriented nature, there are ways to improve the 2016 AMG S63 Coupe’s fuel economy. Gentle acceleration is key; avoid flooring the throttle off the line or during passing maneuvers unless absolutely necessary. The 5.5L twin-turbo V8 is incredibly responsive and generates strong torque even at low RPMs, meaning you don’t need excessive throttle input in most situations.

Maintain a consistent speed on the highway. Fluctuations in speed require frequent acceleration and deceleration, which negatively impacts fuel consumption. Use cruise control whenever possible to maintain a steady pace and minimize unnecessary throttle adjustments. The car AMG MPG across all years is fairly consistent, so these tips should prove useful.

Ensure the tires are properly inflated. Underinflated tires increase rolling resistance, forcing the engine to work harder and consume more fuel. Check the tire pressure regularly, preferably every few weeks, and inflate them to the manufacturer’s recommended specifications, found on the driver’s side door jamb or in the owner’s manual.

Limit the use of auxiliary features like air conditioning and heated seats, as these systems place additional strain on the engine. While comfort is important, especially in a luxury coupe of this level, being mindful of auxiliary power consumption can lead to slight improvements in fuel efficiency.

Consider using a lighter-weight wheel and tire package when it is time to replace them. Heavy wheels and tires add to the car’s rotational mass, requiring more energy to accelerate. Switching to lighter alternatives can marginally improve fuel economy, along with handling.