2015 Mercedes-Benz SL63 AMG MPG & Specs — Real Fuel Cost
Quick answer
The 2015 Mercedes-Benz SL63 AMG gets an EPA-estimated 16/25 MPG (city/highway) and 19 MPG combined, with an estimated $4,000/year fuel cost and 468 g/mi CO₂. Engine: 5.5 L 8-cyl.
The 2015 Mercedes-Benz SL63 AMG with the 5.5-liter 8-cylinder premium gasoline engine returns an EPA-estimated 16 MPG in the city and 25 MPG on the highway, for a combined 19 MPG. This page summarizes the official EPA fuel-economy and emissions data for this configuration.
| Engine | 5.5 L 8-cyl |
| Transmission | Automatic 7-spd |
| Drive | Rear-Wheel Drive |
| Fuel type | Premium Gasoline |
| Vehicle class | Two Seaters |
| MPG — city | 16 |
| MPG — highway | 25 |
| MPG — combined | 19 |
| Annual fuel cost* | $4,000 |
| CO₂ tailpipe | 468 g/mi |
| EPA GHG score | 4/10 |
How efficient is it?
With a combined 19 MPG, the 2015 Mercedes-Benz SL63 AMG sits in the low range for fuel economy. That is about average for its class (Two Seaters, 20 MPG average).
Fuel economy and running costs
At about $4,000 per year in fuel (EPA estimate, 15,000 mi/yr), fuel is a major part of the cost of owning the 2015 Mercedes-Benz SL63 AMG. Over five years that is roughly $20,000 at today's prices — before insurance, maintenance, and depreciation.
Emissions
The 2015 Mercedes-Benz SL63 AMG emits approximately 468 grams of CO₂ per mile at the tailpipe, earning an EPA greenhouse-gas score of 4 out of 10. Lower emissions generally track higher fuel economy.
How to read these numbers
EPA figures come from standardized laboratory test cycles and are the same estimates shown on the vehicle's window sticker. Your real-world mileage depends on driving style, conditions, fuel grade, and maintenance. Use combined MPG and annual fuel cost to compare vehicles fairly.