Petrol | ||||
| CLK 320 (3.2 Mercedes-Benz M112 V6) | 215 hp / 158kW | Rear Wheel Drive | 2002-2005 | |
| CLK 350 (3.5 Mercedes-Benz M272 V6) | 268 hp / 197kW | Rear Wheel Drive | 2005-2009 | |
| CLK 500 (5.0 Mercedes-Benz M113 V8) | 302 hp / 222kW | Rear Wheel Drive | 2002-2006 | |
| 5.4 Mercedes-AMG M113 V8 | 362 hp / 266kW | Rear Wheel Drive | 2002-2005 | |
| CLK 55 AMG (5.4 Mercedes-AMG M113 V8) | 362 hp / 266kW | Rear Wheel Drive | 2005-2006 | |
| CLK 550 (5.5 Mercedes-Benz M273 V8) | 382 hp / 281kW | Rear Wheel Drive | 2006-2009 | |
| CLK 63 AMG (6.2 Mercedes-AMG M156 V8) | 475 hp / 349kW | Rear Wheel Drive | 2006-2008 | |
| 6.2 Mercedes-AMG M156 V8 | 500 hp / 368kW | Rear Wheel Drive | 2007-2008 | |