| engine type | Original performance | Performance after tuning | Vmax | More efficient | price |
|---|---|---|---|---|---|
| 1.8i | 115 KW (156 HP) 240Nm | 192 KW (260 hp) 420Nm | * | 104 hp | 699€ |
| 2.0i | 110 kW (150 hp) 200Nm | 118 kW (161 hp) 220Nm | * | 11 hp | 420€ |
| 2.2i | 125 kW (170 hp) 210Nm | 136 kW (186 hp) 235Nm | * | 16 hp | 499€ |
| 2.3i | 135 KW (184 HP) 270Nm | 157 KW (213 hp) 320Nm | * | 29 hp | 699€ |
| 2.3i | 150 kW (204 hp) 250Nm | 165 kW (225 hp) 265Nm | * | 21 hp | 599€ |
| 2.5i | 130 kW (177 hp) 230Nm | 144 kW (196 hp) 255Nm | * | 19 hp | 499€ |
| 2.5i | 141 kW (192 hp) 245Nm | 154 kW (209 hp) 270Nm | * | 17 hp | 499€ |
| 2.5i | 155 kW (211 hp) 250Nm | 172 kW (235 hp) 270Nm | * | 24 hp | 499€ |
| 2.5i | 160 kW (218 hp) 250Nm | 173 kW (236 hp) 275Nm | * | 18 hp | 499€ |
| 2.5i | 170 kW (231 hp) 300Nm | 180 kW (245 hp) 320Nm | * | 14 hp | 499€ |
| 2.8i | 180 KW (245 HP) 350Nm | 206KW (280 hp) 440Nm | * | 35 hp | 699€ |
| 3.0i | 170 kW (231 hp) 300Nm | 185 kW (252 hp) 325Nm | * | 21 hp | 499€ |
| 3.0i | 190 KW (258 HP) 300Nm | 205 KW (278 HP) 320Nm | * | 20 hp | 649€ |
| 3.0si | 195 kW (265 hp) 315Nm | 208 kW (283 hp) 360Nm | * | 18 hp | 499€ |
| Drive 35i | 225 kW (306 hp) 400Nm | 272 kW (370 hp) 500Nm | * | 64 hp | 699€ |
| 3.5 is | 250 kW (340 hp) 450Nm | 283 kW (385 hp) 580Nm | * | 45 hp | 699€ |
| Z4 coupe M | 252 kW (343 hp) 365Nm | 270 kW (367 hp) 393Nm | * | 24 hp | 599€ |