Mercedes-Benz Engine
M273
The Mercedes-Benz M273 is a DOHC V8 gasoline piston engine.
- Years
- 2006–2011
- Configuration
- V8
- Fuel
- Gasoline
- Top power
- 387 PS
The M272’s V8 twin — 5.5 liters, four cams, and the last naturally aspirated big eight before AMG went biturbo.
Sharing the 90° architecture and dual-length intake of the M272 six, the M273 displaced 5,461 cc (98 × 90.5 mm) at 10.7:1 compression. It replaced the M113 in volume models from about 2006 — SL 550, CLK 500, CL 500, GL 450/500 — with outputs near 285 kW and 530 N·m.
AMG still preferred the M156 and later the M157 for 63 models, so the M273 remained the mainstream V8. By the early 2010s the biturbo M278/M157 family had largely superseded it.
Versions.
Every factory version of the M273.
| Version | Displacement | Bore × Stroke | Compression | Power | Torque |
|---|---|---|---|---|---|
| 273.965 | 5,461 cc | 98 × 90.5 mm | 10.7 | 285 kW (382 hp; 387 PS) at 6,000 rpm | 530 N·m (391 lb·ft) at 2,800 rpm |
Applications.
Every model powered by the M273.
- 2007–2010 Mercedes-Benz CLK 500 Cabriolet A209
- 2007–2010 Mercedes-Benz CLK 500 Coupé C209
- 2007–2010 Mercedes-Benz CL 500 Coupé C216
- 2006–2008 Mercedes-Benz SL 550 Roadster R230
- 2008–2011 Mercedes-Benz SL 550 Roadster R230
- 2008–2010 Mercedes-Benz R 500 4MATIC LWB W251
- 2008 Mercedes-Benz ML 500 4MATIC SUV W164
- 2006–2010 Mercedes-Benz CLS 500 4-Door Coupé C219
- 2008–2010 Mercedes-Benz R 500 4MATIC Sedan W251
- 2006–2009 Mercedes-Benz GL 450 4MATIC SUV X164
- 2006–2009 Mercedes-Benz GL 500 4MATIC SUV X164
- 2009–2016 Mercedes-Benz E 500 Sedan W212
- 2005–2013 Mercedes-Benz S 450 Sedan W221
- 2005–2013 Mercedes-Benz S 500 Sedan W221
- 2008–2015 Mercedes-Benz G 550 Wagon W463