The 2015 Mercedes-Benz SL63 AMG gets 19 MPG combined, a figure that might not be a priority for its typical buyer. This isn’t basic transportation; it’s a high-performance roadster designed to thrill, and fuel consumption is simply part of the cost. Owners likely focus more on the exhaust note and rapid acceleration than comparing MPGs while driving hard. The SL63 buyer prioritizes power and driving excitement, understanding the trade-offs.

City and highway performance

The EPA estimates the SL63 AMG will achieve 16 MPG in the city and 25 MPG on the highway. The significant improvement in fuel efficiency on the open road shows the car’s ability to settle into a more relaxed cruising speed, which allows the engine management system to optimize fuel delivery. However, urban driving and the temptation to use the engine’s power will reduce efficiency. Many SL63 AMG owners may not consistently achieve the EPA’s city estimates because of the car’s addictive performance.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2015 Mercedes-Benz SL63 AMG at $3,050. This figure is based on driving 15,000 miles per year, with 45% in the city and 55% on the highway. The calculation also uses national average fuel prices at the time of the estimate. This is a useful estimate for budgeting, but your actual fuel costs will vary depending on your driving and local fuel prices. Owners who are less careful about fuel efficiency will likely exceed this figure.

Real-world expectations

Do not expect to consistently match the EPA figures in real-world driving. Quick acceleration, frequent sport mode use, and spirited driving on twisty roads will significantly decrease fuel economy. Owners who primarily drive the SL63 for weekend trips and occasional fun drives can expect fuel consumption closer to the EPA estimates. Those who commute in heavy traffic or often explore the engine’s power limits will likely see much lower numbers. Your driving style will greatly affect fuel economy. Also, check SL63 MPG across all years for more trends.

How it compares

The SL63 AMG is in a unique class, but comparisons are expected. The 2015 Jaguar F-TYPE R Coupe, with its supercharged V8, delivers similar performance but achieves a slightly better 18 MPG city and 24 MPG highway. A Porsche 911 Carrera S Cabriolet, while not as powerful, manages around 20 MPG city and 28 MPG highway, proving that performance and efficiency can coexist. Buyers comparing these vehicles must decide if the SL63’s power and luxury justify its fuel consumption. Fuel consumption isn’t a reason to buy a car like this; the other vehicles available show slight differences that are likely not the deciding factor. For those interested in even more information on all Mercedes Benz fuel economy data there are more resources available.

Tips to maximize efficiency

Avoid fast acceleration and hard braking. The SL63 AMG’s power is tempting, but gentle acceleration will save fuel and reduce tire wear. Anticipate traffic and maintain a steady speed. Consistent driving uses less fuel.

Use the car’s “Comfort” driving mode for regular driving. This setting optimizes engine and transmission settings for fuel efficiency, reducing throttle response and encouraging earlier upshifts. While it may slightly reduce responsiveness, it can improve gas mileage.

Make sure your tires are properly inflated. Underinflated tires increase rolling resistance, which reduces fuel economy. Check your tire pressure regularly and inflate them to the recommended levels for performance and efficiency.

Minimize idling. Letting the engine idle consumes fuel. If you expect to be stopped for more than a minute or two, turn off the engine. Modern cars like the SL63 AMG are designed to restart quickly.