Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2001 Subaru Outback Base, AutomaticFACTORY OEM SERVICE PROCEDURE
Section 120 (Identification & Specifications): Specifications: Engine
WARNING: This page is about a different car, the 2004 Subaru Impreza. However, it is still accessible from the selected car via links, so may be relevant.
Engine Specifications Chart
| Model | Turbo 2.0 L | 2.5 L | STi | |
| Engine type | Horizontally opposed, liquid cooled, 4-cylinder, 4-stroke gasoline engine | |||
| Valve arrangement | Overhead camshaft type | |||
| Bore x Stroke | mm (in) | 92 x 75 (3.62 x 2.95) | 99.5 x 79 (3.92 x 3.11) | |
| Displacement | cm3 (cu in) | 1,994 (121.67) | 2,457 (149.9) | |
| Compression ratio | 8.0 ± 0.2 | 10.0 ± 0.2 | 8.2 ± 0.2 | |
| Firing order | 1 - 3 - 2 - 4 | |||
| Idle speed at Park/Neutral position | rpm | 750±100 | MT: 650±100 AT: 700±100 |
700 ± 100 |
| Maximum output | kW (HP)/rpm | 169 (227)/6,000 | 123 (165)/5,600 | 224 (300)/6,000 |
| Maximum torque | N.m (kgf-m, ft-lb)/rpm | 294 (30.0, 217)/4,000 | 226 (23.0, 166)/4,000 | 407 (41.5, 300)/4,000 |
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.