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What engine is in a 2.5 i Subaru Legacy?

The 2.5i Subaru Legacy is equipped with a 2.5-liter horizontally-opposed four-cylinder "boxer" engine. This engine is a core component of the Subaru Legacy's powertrain, providing the necessary power and performance for this midsize sedan.


Subaru's Signature Boxer Engine


The 2.5-liter boxer engine in the Subaru Legacy is part of Subaru's signature engine design. Boxer engines, also known as "flat" or "horizontally-opposed" engines, have their cylinders arranged horizontally rather than vertically. This unique configuration provides several benefits, including a lower center of gravity for improved handling and stability.


The 2.5-liter boxer engine in the 2.5i Subaru Legacy produces 182 horsepower and 176 lb-ft of torque. This provides ample power for everyday driving, with a good balance of acceleration, fuel efficiency, and reliability.


Key Features of the 2.5i Engine



  • Displacement: 2.5 liters (2,498 cc)

  • Configuration: Horizontally-opposed 4-cylinder "boxer" engine

  • Horsepower: 182 hp @ 5,800 rpm

  • Torque: 176 lb-ft @ 4,400 rpm

  • Fuel Delivery: Direct fuel injection

  • Transmission: Standard 6-speed manual or available Lineartronic CVT automatic


The combination of the 2.5-liter boxer engine and Subaru's Symmetrical All-Wheel Drive system gives the 2.5i Legacy excellent performance and capability in a variety of driving conditions.p>

Do Subaru 2.5 engines have head gasket problems?


Abnormal combustion: Head gasket failure can occur on naturally aspirated 2.5L Subaru engines due to detonation or pre-ignition. It is more common for owners of turbocharged models to experience this type of failure though, due to increased cylinder pressures.



Is the Subaru 2.5 i engine reliable?


Conclusion: Overall, the Subaru 2.5L H4 engine is generally considered reliable and capable, especially for those who prioritize all-wheel drive and versatility. However, potential buyers should be aware of common issues and consider maintenance history when evaluating a used vehicle.



What is the Subaru 2.5 L 4 cylinder engine?


2.5L SUBARU BOXER® Four-Cylinder Engine
With the assistance of a Lineartronic® CVT (continuously variable transmission), this engine offers 182 horsepower, 176 pound-feet of torque, and a smooth driving experience. The Base, Premium, Onyx Edition, Limited, and Touring trims all come standard with the 2.5L engine.



What engine does the Subaru Legacy use?


BASE | PREMIUM | LIMITED

ENGINE 2.5L DOHCHORSEPOWER 182 hp
TRANSMISSION Lineartronic® CVTTORQUE 176 lb-ft



Which Subaru uses EJ20 engine?


At that time, the EJ20 was only being sold in the Japanese domestic market for the WRX STI, and a special "WRX STI EJ20 Final Edition" with a balanced version of the engine was sold to commemorate the end of EJ20 production.



What Subaru has the EJ255 engine?


Model Applications

EJ255GHEImpreza WRX
EJ255 BE6PBGVEImpreza WRX
EJ255 BE6PBGVEImpreza WRX Limited
EJ255 BE6PBGVEImpreza WRX Premium
EJ255 BE6PBGVEImpreza WRX Special Edition



Is EJ255 same as EJ257?


For those production years, the engines were the same from the case, rods, and pistons, up to the B25 heads and cams. The only difference between them was the turbo and intercooler set-up, and the tuning of the ECU.



How do I tell what EJ25 I have?


Placement isn't enough ej25. And ej20 is just a general term for displacement. So we need to take the next step and figure out what type of throttle body it has. So this engine.



What is the life expectancy of a Subaru 2.5 engine?


200,000 miles
Engine Lifespan: Subaru engines are known for their durability and longevity, with many drivers reporting engines that last well beyond 200,000 miles with proper maintenance. The key to extending the lifespan of your Subaru engine is regular maintenance, including oil changes, fluid checks, and tune-ups.



How long do Subaru Legacy engines last?


200,000 miles
Engine Lifespan: Subaru engines are known for their durability and longevity, with many drivers reporting engines that last well beyond 200,000 miles with proper maintenance. The key to extending the lifespan of your Subaru engine is regular maintenance, including oil changes, fluid checks, and tune-ups.


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.