2020 Mercedes-Benz Sl450
22MPG
Combined
1
Trim
← 2019
2020
Updated February 27, 2026
Get the full picture on the 2020 Mercedes-Benz Sl450. As a Sports Car, it achieves 22 combined MPG and has not yet been rated by NHTSA. Below you’ll find detailed specs for every trim, plus recall information and competitor comparisons.
2020 Mercedes-Benz Sl450 Specifications
| Spec | Value |
|---|---|
| Combined MPG | 22 combined MPG |
| City MPG | 20 |
| Highway MPG | 28 |
| Body Style | Sports Car |
| Fuel Type | Premium |
| Drive | RWD |
| Available Trims | 1 |
Annual Fuel Cost
Based on EPA estimates, the 2020 Mercedes-Benz Sl450 costs approximately $2,650 per year in fuel. This assumes 15,000 miles driven annually and current fuel prices.
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