The SL550 spans two distinct eras: the last of the V8 R230 cars through 2012, then the aluminum-intensive R231 from 2013 with its 429-hp 4.7-liter biturbo V8. Across both, the formula held — a folding-hardtop two-seater that works as daily transport and open grand tourer in equal measure. The 2017 facelift brought 449 hp and nine speeds, making the late cars the most complete of the line.
Specifications
| Year | 2020 |
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| Make | Mercedes-Benz |
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| Model | SL550 |
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| Engine | 4.7L 8-cylinder |
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| Top Speed | 155 mph |
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| Transmission | Automatic 9-spd |
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| Drivetrain | RWD |
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| Fuel | Premium Gasoline |
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| EPA MPG (City/Hwy) | 17 / 25 |
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The 2020 model year
2020 marked the end of the SL550 and the R231 line; the nameplate did not return until the 2022 AMG SL.
Mercedes-Benz SL550 by year
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