General Information: Specifications: Forester: Engine
| Model | 2.5 L non-turbo | 2.5 L turbo | ||
| Engine type | Horizontally opposed, liquid cooled, 4-cylinder, 4-stroke gasoline engine | |||
| Valve system mechanism | Method | DOHC | DOHC | |
| Number of valves | Intake 2/Exhaust 2 | |||
| Bore x stroke | mm (in) | 94.0 x 90.0 (3.70 x 3.54) | 99.5 x 79 (3.92 x 3.11) | |
| Displacement | cm3 (cu in) | 2, 498 (152.43) | 2, 457 (149.93) | |
| Compression ratio | 10.0 | 8.4 | ||
| Ignition order | 1 - 3 - 2 - 4 | |||
| Idling speed [at neutral position on MT, or "P" or "N" position on AT] | rpm | AT: 675±100 MT: 650±100 |
700±100 | |
| Maximum output | kW (HP)/rpm | 126 (170)/5, 800 | 167 (224)/5, 200 | |
| Maximum torque | N.m (kgf-m, ft-lb)/rpm | 235 (24.0, 174)/4, 100 | 307 (31.3, 226)/2, 800 | |