Fuel Economy of the 2015 Mercedes-Benz S63 AMG 4matic Coupe

18 MPG combined. Let’s be brutally honest: if you’re deeply concerned about fuel economy, the 2015 Mercedes-Benz S63 AMG 4matic Coupe isn’t for you. This isn’t a car designed for hypermiling or setting economy records. It’s a statement, a visceral experience, and performance where fuel efficiency takes a considered, yet distant backseat. Its owners are typically successful professionals, entrepreneurs, or individuals who prioritize power, luxury, and exclusivity, and are fully aware of (and accept) the fuel consumption that comes with the territory. They value the hand-built AMG engine and the exhilarating driving experience far more than saving a few dollars at the pump.

City and highway performance

The EPA estimates for the 2015 S63 AMG Coupe break down to 15 MPG in the city and 23 MPG on the highway. The city figure reflects the realities of stop-and-go traffic where the large displacement V8 is constantly working to overcome the car’s considerable weight. The 23 MPG highway figure is more palatable and achievable on long cruises where the engine settles into a more relaxed state, and the 7-speed automatic transmission makes the most of its available gears. However, even on the highway, enthusiastic use of the throttle will quickly see that number plummet.

Annual fuel cost

The EPA calculates the annual fuel cost for the 2015 Mercedes-Benz S63 AMG 4matic Coupe at $3,200. This figure is based on driving 15,000 miles per year, using a blend of city and highway driving, and assumes national average fuel prices. It’s important to remember that this is an estimate. Your actual fuel costs will vary depending on your driving habits, the type of fuel you use, and local fuel prices. Given the S63’s penchant for premium fuel and its drivers’ propensity for spirited driving, exceeding this annual figure is highly probable.

Real-world expectations

While the EPA figures provide a benchmark, real-world MPG for the 2015 S63 AMG Coupe is heavily influenced by driving style. Those who enjoy the car’s considerable power and rapid acceleration will likely see numbers closer to the city estimate, even on mixed driving cycles. Conversely, those who primarily use the car for long highway trips and adopt a more relaxed driving style might be able to achieve figures closer to the highway estimate but only with considerable restraint. Aggressive driving will drop MPG to the low teens or even single digits in short bursts of acceleration.

How it compares

The S63 AMG Coupe finds itself in a rarefied class of high-performance luxury coupes. The BMW M6 Gran Coupe, for example, offered similar performance with an EPA-estimated 17 MPG combined. The Porsche 911 Turbo S, while smaller, also offered blistering performance but with a slightly better 20 MPG combined, reflecting its more efficient engine design. These comparisons are relevant, but the S63 buyer is often choosing a specific blend of luxury, comfort, and power, accepting the fuel economy penalty to achieve that specific combination. You can also compare S63 MPG across all years on our website.

Tips to maximize efficiency

Treat the throttle with respect. The 5.5L twin-turbo V8 is incredibly responsive. Gentle acceleration will minimize fuel consumption, especially in city driving. Avoid sudden bursts of speed unless absolutely necessary.

Use cruise control on the highway. Maintaining a consistent speed helps to optimize fuel efficiency. Resist the urge to constantly accelerate and decelerate, as this burns more fuel.

Ensure proper tire inflation. Under-inflated tires increase rolling resistance, which decreases fuel economy. Check tire pressures regularly and inflate them to the recommended levels.

Consider using the “Comfort” driving mode. While “Sport” and “Sport+” modes enhance throttle response and shift points, they also prioritize performance over efficiency. “Comfort” mode generally provides a more relaxed and fuel-efficient driving experience.

Keep up with scheduled maintenance. A well-maintained engine runs more efficiently. Regular oil changes, spark plug replacements, and other maintenance items will help to keep your S63 AMG Coupe running at its best and maximizing fuel economy. It’s also a good idea to view all Mercedes Benz fuel economy data to compare this model to others in the family.