2020 Mercedes-Benz AMG S63 4matic Plus Convertible Fuel Economy

18 MPG combined. Let’s address it right away. That’s the EPA-estimated fuel economy for the 2020 Mercedes-Benz AMG S63 4matic Plus Convertible, and frankly, it’s almost beside the point. Nobody buys a hand-built, twin-turbocharged V8 convertible dripping in luxury and exclusivity because they’re prioritizing fuel efficiency. This car is about the visceral experience, the top-down exhilaration, and the effortless surge of power that pins you to your exquisitely stitched leather seat. The target demographic is successful entrepreneurs, high-powered executives, and those who simply appreciate the finer things in life, individuals for whom the cost of fuel is a negligible factor compared to the sheer joy of owning and driving this automotive masterpiece.

City and highway performance

The EPA estimates the S63 Convertible achieves 15 MPG in the city and 24 MPG on the highway. The disparity emphasizes this car’s true domain: open roads where the engine can stretch its legs. Stop-and-go traffic will punish the fuel tank, but a weekend cruise along the coast should yield closer to that 24 MPG figure, especially if you resist the urge to constantly dip into the seemingly endless reserves of power. The 9-speed automatic transmission plays a role here, offering smooth and relatively efficient cruising when not spurred into aggressive downshifts.

Annual fuel cost

According to the EPA, the estimated annual fuel cost for the 2020 Mercedes-Benz AMG S63 Convertible is $3,200. This figure is based on driving 15,000 miles per year and using national average fuel prices. Keep in mind that this is just an estimate, and your actual fuel costs may vary depending on your driving habits, local fuel prices, and the type of fuel you use. Given the high-performance nature of the AMG S63, premium fuel is strongly recommended, if not required, further contributing to the overall running costs.

Real-world expectations

While the EPA figures offer a baseline, real-world fuel economy will almost certainly vary. Few S63 owners will drive solely in a manner conducive to maximizing MPG. The temptation to exploit the prodigious power and hear the snarl of the AMG exhaust is simply too strong. Expect to see numbers closer to the city rating in everyday driving, and be pleasantly surprised if you achieve the highway estimate on longer trips. Ultimately, fuel economy is secondary to the overall experience this car provides.

How it compares

The S63 Convertible occupies a rarefied space, but it’s worth considering how its fuel economy stacks up against similar performance convertibles. The BMW M850i xDrive Convertible, for instance, achieves a combined 20 MPG from its twin-turbo V8, representing a slight improvement. On the other hand, the Aston Martin Vantage Roadster, with its AMG-sourced V8, delivers an EPA-estimated 20 MPG combined as well. While these differences exist, they are unlikely to sway a buyer already drawn to the specific blend of luxury, performance, and presence offered by the AMG S63. A potential buyer might also be interested in researching AMG MPG across all years before concluding their research. You can examine all Mercedes Benz fuel economy data on our site as well.

Tips to maximize efficiency

While squeezing every last mile out of a gallon of fuel may not be the primary concern for an S63 owner, there are still ways to improve efficiency without sacrificing too much enjoyment.

Avoid aggressive acceleration. The S63’s engine is immensely powerful, and even moderate throttle inputs deliver ample performance. Ease into acceleration and avoid sudden bursts of speed to conserve fuel.

Use the car’s driving modes. The AMG S63 offers a range of driving modes, including Comfort and Eco. Selecting these modes adjusts engine mapping, transmission behavior, and other parameters to prioritize fuel efficiency over outright performance.

Maintain proper tire inflation. Underinflated tires increase rolling resistance, which reduces fuel economy. Check your tire pressure regularly and inflate them to the recommended levels.

Service the vehicle according to the manufacturer’s recommendations. Regular maintenance, including oil changes, air filter replacements, and spark plug changes, ensures that the engine is running optimally and efficiently.