| engine type | Original performance | Performance after tuning | Vmax | More efficient | price |
|---|---|---|---|---|---|
| DIESEL | |||||
| CLK 220 CDI | 110 kW (150 hp) 340Nm | 132 kW (180 hp) 400Nm | * | 30 hp | 420 € |
| CLK 270 CDI | 120 kW (163 hp) 400Nm | 147 kW (200 hp) 480Nm | * | 37 hp | 420 € |
| CLK 320 CDI | 165 kW (224 hp) 510Nm | 191 kW (260 hp) 600Nm | * | 36 hp | 420 € |
| PETROL | |||||
| CLK 200 Compr. | 135 kW (184 hp) 240Nm | 147 kW (200 hp) 265Nm | * | 16 hp | 349 € |
| CLK 200 Compr. | 120 kW (163 hp) 240Nm | 132 kW (180 hp) 260Nm | * | 17 hp | 349 € |
| CLK 240 | 125 kW (170 hp) 240Nm | 135 kW (184 hp) 260Nm | * | 14 hp | 399 € |
| CLK 270 | 125 kW (170 hp) 400Nm | 150 kW (204 hp) 465Nm | * | 34 hp | 399 € |
| CLK 280 | 170 kW (231 hp) 300Nm | 185 kW (252 hp) 325Nm | * | 21 hp | 499 € |
| CLK 320 | 160 kW (218 hp) 310Nm | 176 kW (240 hp) 340Nm | * | 22 hp | 499 € |
| CLK 350 | 200 kW (272 hp) 350Nm | 218 kW (296 hp) 380Nm | * | 24 hp | 499 € |
| CLK 500 | 225 kW (306 hp) 460Nm | 240 kW (326 hp) 490Nm | * | 20 hp | 399 € |
| CLK 500 | 285 kW (388 hp) 530Nm | 304 kW (413 hp) 570Nm | * | 25 hp | 399 € |
| CLK 55 AMG | 255 kW (347 hp) 510Nm | 269 ??kW (367 hp) 535Nm | * | 20 hp | 399 € |
| CLK 55 AMG | 270 kW (367 hp) 510Nm | 288 kW (392 hp) 540Nm | * | 25 hp | 399 € |
| CLK 63 AMG | 354 kW (481 hp) 630Nm | 375 kW (530 hp) 660Nm | * | 49 hp | 699 € |
| CLK 63 AMG Black | 373 kW (508 hp) 630Nm | 390 kW (530 hp) 660Nm | * | 22 hp | 699 € |
| DTM AMG 5.4 V8 | 428 kW (582 hp) 800Nm | 453 kW (616 hp) 870Nm | * | 34 hp | 699 € |