Does the 2020 Mercedes-Benz SL-Class need premium gas?
Yes. Premium.
$327extra a year
- Premium listed for the SL 450 Roadster RWD.
- All 3 trims list premium.
- Required or only recommended: the data does not say.
- 100% of 22 convertibles (2020) list premium.
12,000 miles a year. Gas $3.20. Premium $0.60 more.
| Trim | Engine | Grade | Mpg | Regular, a year | Premium, a year |
|---|---|---|---|---|---|
| SL 450 Roadster RWD | 3.0L 6cyl | Premium | 22 | $1,745 | $2,073 |
| SL 550 Roadster RWD | 4.7L 8cyl | Premium | 20 | $1,920 | $2,280 |
| SL 400 Roadster 2D RWD | 3.0L 6cyl | Premium | 22 | $1,745 | $2,073 |
Rivals
| Car | Cheapest trim | Grade |
|---|---|---|
| 2020 Mercedes-Benz SL-Class | SL 450 Roadster RWD | Premium |
| 2020 BMW 8 Series | 840i Gran Coupe RWD | Premium |
| 2020 Porsche 911 | Carrera RWD | Premium |
What this cannot tell you
Check the fuel door or manual before you fill.
Gas prices and the premium gap change by state.
- 2 or more sources
- 1 source
- Model-level, rule or estimate
- Sources disagree