M155
V8- 155.980 5.4 L · 5,439 cc
625 PS
460 kW · 617 hv / 6,500 r/min
780 N·m
575 lb·ft / 3,250 r/min
Mercedes-Benz SLR McLaren Roadster (R199) · SLR McLaren Roadster
Convertible supercar from the Mercedes-McLaren partnership.

Mercedes-Benz offered the SLR McLaren as a Roadster on the R199 chassis from 2007, with a speed-activated automatic fabric hood and the same 626 PS supercharged 5.4-liter V8 that propelled the C199 coupé to over 330 km/h. The Roadster's carbon-fibre body and active rear spoiler maintained the SLR's dramatic proportions; the subsequent SLR McLaren 722 S Roadster and the roofless, windscreen-less SLR Stirling Moss Speedster pushed the concept to its extremes.
Produced until May 2009, the R199 SLR McLaren Roadster completed the SLR program's body-style range — an open super-GT as audacious as the coupé that defined Mercedes-Benz's early-twenty-first-century performance ambitions.

2 model designations across 2008–2009 — engines, chassis codes and production figures for the R199.
| Malli | Mallivuodet | Valmistettu | Alusta | Moottori | Vaihteisto | Yhteensä |
|---|---|---|---|---|---|---|
| SLR McLaren Roadster | 2008–2009 | 08.2007–05.2009 | 199.476 | 155.980 | 722.648 | 670 |
| SLR 722 S | 2009 | 2009–2009 | 199.476 | 155.980 | 722.648 | 150 |
* Julkaistu tuotantoluku kattaa kyseisen mallin kaikki sarjat; lähde ei erittele sitä tarkemmin.

The open SLR from the 626 PS roadster to the limited 722 S finale.

The M155 as fitted to the R199.
625 PS
460 kW · 617 hv / 6,500 r/min
780 N·m
575 lb·ft / 3,250 r/min