16 MPG combined isn’t going to top any fuel economy charts for the 2022 Mercedes-Benz AMG SL63 4Matic Plus. But buyers of this high-performance roadster likely prioritize acceleration, luxury and the sound of a hand-built V8 over fuel efficiency. This car is a weekend toy, a status symbol, and a performance machine. Its target buyer is focused on the driving experience, not saving money at the pump.

City and highway performance

The EPA estimates the AMG SL63 will get 14 MPG in the city and 21 MPG on the highway. These numbers reflect the reality of a powerful, twin-turbocharged 4.0L V8 engine paired with a 9-speed automatic transmission that delivers quick shifts. Expect the city number to drop with aggressive driving, as it’s tempting to use all the engine’s power. The highway figure is more realistic, especially if you use cruise control. But even then, the SL63 isn’t made for maximum efficiency.

Annual fuel cost

According to the EPA, the estimated annual fuel cost for the 2022 Mercedes-Benz AMG SL63 4Matic Plus is $3,600. This is based on driving 15,000 miles per year and using premium gasoline, which this car requires, at current national average prices. This is just an estimate. Your actual fuel costs will vary based on how you drive, local fuel prices, and how often you enjoy the SL63’s performance.

Real-world expectations

Enthusiast vehicles rarely hit their EPA ratings in real-world driving, and the AMG SL63 is no different. Aggressive driving, frequent use of performance features, and short trips will lead to lower MPG than the EPA suggests. Drivers who want better fuel efficiency can compare other models at all Mercedes Benz fuel economy data. Owners should add 10-20% to the EPA’s $3,600 estimate for realistic use.

How it compares

The AMG SL63 is in a segment where performance is more important than fuel economy, but comparisons are still useful. A Porsche 911 Carrera S gets a combined 20 MPG with its twin-turbo flat-six engine, though it’s not a direct comparison due to its rear-engine layout and different buyer. The BMW M8 Competition Convertible, another powerful luxury convertible, gets around 17 MPG combined. Even other AMG models offer insights too. Check AMG MPG across all years to see trends in their fuel efficiency. Ultimately, the AMG SL63 buyer knows they’re paying extra for performance, so small differences in fuel economy are less important than brand, styling, and the overall driving experience.

Tips to maximize efficiency

Getting good fuel economy in the AMG SL63 means driving conservatively. Avoid hard acceleration and braking, as these greatly increase fuel use. Use the car’s ECO mode when you can. This setting adjusts the engine and transmission for better efficiency, though it reduces responsiveness.

Make sure your tires are inflated to the recommended pressure. Low tire pressure increases rolling resistance, which hurts fuel economy. Checking your tire pressure regularly is quick and easy and can make a difference.

Remove unnecessary weight from the car. Extra weight forces the engine to work harder and use more fuel. Only keep essential items in the car.

Plan your routes to avoid traffic. Stop-and-go traffic wastes gas, as the engine is always idling or accelerating. Use navigation apps to find the best route and save fuel.