The 2016 Mercedes-Benz AMG SL63 realistically gets 19 MPG combined. To be clear, most people don’t buy this car for fuel efficiency. It’s a high-performance roadster, a statement as much as transportation, and owners want fast acceleration and open-air thrills more than saving money at the gas station. The SL63 buyer is purchasing an experience, and the fuel bill is simply part of the cost.

City and highway performance

The SL63’s 5.5L twin-turbo V8 delivers thrilling performance, but that power uses a lot of gas. Expect around 16 MPG in city driving. Stop-and-go traffic and the temptation to use the engine’s strong torque frequently will quickly empty the fuel tank. On the open road, the SL63 does a little better, achieving around 25 MPG on the highway. Even then, getting that number requires resisting the urge to deploy the seemingly endless power available with a tap of the accelerator.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2016 Mercedes-Benz AMG SL63 at $3,050. This is based on driving 15,000 miles per year and using national average fuel prices. This vehicle requires premium fuel, so if gasoline prices increase or you drive more than average, that $3,050 figure could quickly climb.

Real-world expectations

The EPA’s estimates are a benchmark, but your actual fuel economy will depend on your driving. Expect slightly lower MPG in real-world conditions if you often drive fast or live in an area with heavy traffic. However, those who mostly use the SL63 for relaxed highway cruising might see figures closer to, or even slightly exceeding, the EPA highway estimate. The most important factor is the driver’s restraint. The SL63 encourages enthusiastic driving, which uses more gas.

How it compares

The AMG SL63’s fuel economy is similar to other high-performance roadsters. The BMW M6 Convertible, for example, with its 4.4L twin-turbo V8, gets an EPA-estimated 17 MPG combined. The Jaguar F-Type R Convertible, packing a supercharged 5.0L V8, delivers a similar 18 MPG combined. The Porsche 911 Turbo S Cabriolet, while offering even higher performance, manages a slightly better 20 MPG combined thanks to Porsche’s focus on efficiency. For this type of buyer, these differences are often less important than power, handling, and brand appeal. Review all Mercedes Benz fuel economy data to see alternative choices within the brand, or explore AMG MPG across all years.

Tips to Maximize Efficiency

While fuel efficiency may be secondary to the SL63 owner, there are steps you can take to improve your mileage. Use a light foot on the accelerator, especially when accelerating from a stop. The twin-turbo V8 delivers plenty of power even with moderate throttle inputs.

Engage the “Comfort” driving mode when cruising on the highway. This mode optimizes the throttle response and transmission settings for fuel efficiency. While it might slightly reduce the immediacy of the acceleration, it can noticeably improve your MPG over longer distances.

Ensure your tires are properly inflated and your SL63 is well-maintained. Properly inflated tires reduce rolling resistance, and regular maintenance ensures the engine runs well. Both help fuel economy, even in a high-performance vehicle.

Avoid extended periods of idling. If you’re waiting for someone or stopped for more than a few minutes, turn off the engine. Modern engines are designed to restart quickly and efficiently, minimizing fuel usage.

Finally, anticipate traffic flow and avoid unnecessary braking and acceleration. Smooth, consistent driving is the key to maximizing fuel economy in any vehicle, especially one as potent as the AMG SL63. Careful use of the throttle, combined with a proactive approach to driving, can help to make the most of the fuel in your tank.