WRX STI: Engine
WARNING: This page is about a different variant/trim than selected.
| Model | 2.5 L DOHC high power turbo | |
| Engine type | Horizontally opposed, liquid cooled, 4-cylinder, 4-stroke gasoline engine | |
| Valve arrangement | DOHC | |
| Bore X stroke | mm (in) | 99.5 X 79.0 (3.92 X 3.11) |
| Displacement | cm3 (cu in) | 2, 457 (150) |
| Compression ratio | 8.2 | |
| Ignition order | 1 - 3 - 2 - 4 | |
| Idle speed at parking or neutral position | r/min | 700±100 |
| Maximum output | kW (HP)/(r/min) | 227 (305)/6, 000 |
| Maximum torque | N.m (kgf-m, ft-lb)/(r/min) | 393 (40.2, 290)/4, 000 |