| engine type | Original performance | Performance after tuning | Vmax | More efficient | price |
|---|---|---|---|---|---|
| CL 500 | 225 kW (306 hp) 460Nm | 240 kW (326 hp) 485Nm | * | 20 hp | 499 |
| CL 600 | 270 kW (367 hp) 530Nm | 282 kW (383 hp) 555Nm | * | 16 hp | 799 |
| CL 600 | 368 kW (500 hp) 800Nm | 425 kW (578 hp) 910Nm | * | 78 hp | 799 |
| CL 65 AMG | 450 kW (612 hp) 1000Nm | 475 kW (646 hp) 1100Nm | * | 34 hp | 799 |