2018 Mercedes-Benz SL-Class
4 configurations — EPA fuel economy ratings
| Trim / Variant | City MPG | Hwy MPG | Combined MPG | Fuel | Drive | Engine | Transmission |
|---|---|---|---|---|---|---|---|
| AMG SL63 | 16 | 25 | 19 | Premium Gasoline | Rear-Wheel Drive | 5.5L 8-cyl Turbo | Automatic 7-spd |
| AMG SL65 | 13 | 22 | 16 | Premium Gasoline | Rear-Wheel Drive | 6L 12-cyl Turbo | Automatic 7-spd |
| SL450 | 20 | 28 | 23 | Premium Gasoline | Rear-Wheel Drive | 3L 6-cyl Turbo | Automatic 9-spd |
| SL550 | 17 | 25 | 20 | Premium Gasoline | Rear-Wheel Drive | 4.7L 8-cyl Turbo | Automatic 9-spd |