The Ultimate Guide to Subaru’s 2.5 Engine Cylinder 4: Performance, Design, and Reliability

If you’re a car enthusiast or a mechanic looking to learn more about the Subaru 2.5 engine cylinder 4, you’ve come to the right place. In this article, we’ll dive into every detail of the engine, including its technical specifications, performance, fuel economy, design, and overall reliability.

Subaru 2.5 Engine Cylinder 4: Technical Specifications

The Subaru 2.5 engine cylinder 4 is a powerful engine that packs a punch. Its technical specifications include:

  • Horsepower: 182-310 hp
  • Torque: 176-290 lb-ft
  • Compression ratio: 10:1
  • Displacement: 2.5 L
  • Fuel type: Regular unleaded or premium unleaded

The 2.5 engine cylinder 4 is a horizontally-opposed, four-cylinder engine that uses Subaru’s famous Boxer engine design. This engine design allows for better balance and a lower center of gravity, which results in improved handling and overall driving experience.

Performance and Fuel Economy

The Subaru 2.5 engine cylinder 4 is known for its impressive performance capabilities. Its horsepower and torque ratings are dependable and provide a thrilling driving experience. Moreover, this engine’s fuel economy is quite impressive, making it the perfect choice for car enthusiasts who also care about fuel efficiency.

For instance, the 2021 Subaru Outback with a 2.5 engine cylinder 4 is estimated to achieve an impressive EPA-estimated 27 mpg in the city and 35 mpg on the highway, translating to 30 mpg combined fuel economy.

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Design and Reliability

The Subaru 2.5 engine cylinder 4 is designed with quality and reliability in mind. The use of durable materials in the engine’s design makes it withstand any harsh conditions and frequent use. Moreover, the engine is designed to produce quality output without any unnecessary engine noise or vibrations.

Additionally, the engine is designed to give more power to the driver at different RPMs. The engine is powerful in low-end acceleration, which is ideal for driving in hilly or mountainous areas. The Subaru 2.5 engine cylinder 4 is also dependable and offers great longevity, allowing you to enjoy the engine’s performance for a long time.

Differences Between Subaru’s 2.5 Engine Cylinder 4 and Other Models

Subaru has several other engine models in its lineup, making it essential to know the differences between the 2.5 engine cylinder 4 and other models. For instance, the Subaru WRX STI 2.5 engine cylinder 4 that’s available on Subaru’s performance vehicle, has a horsepower of up to 310 hp and a torque of up to 290lb-ft, making it more powerful than the 2.5 engine cylinder 4 in Subaru’s crossover lineup.


Q. What is the life span of a Subaru 2.5 engine cylinder 4?

A. With proper care and maintenance, the lifespan of the Subaru 2.5 engine cylinder 4 is about 200,000 miles.

Q. What is the price of a new Subaru 2.5 engine cylinder 4?

A. The price of the engine varies based on the vehicle model and year. However, the 2021 Subaru Outback with a 2.5 engine cylinder 4 starts with an MSRP of $26,795.

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Q. Can the 2.5 engine cylinder 4 be turbocharged?

A. Yes. The engine can be turbocharged, as evidenced by the Subaru WRX and STI, which both have 2.5 engine cylinder 4 with turbocharged engines.


The Subaru 2.5 engine cylinder 4 is a fantastic engine that offers great performance, fuel economy, and reliability. Its design and build quality make it an excellent choice for anyone seeking a dependable engine. Subaru’s Boxer engine design ensures the engine performs better while offering a unique driving experience. With the detailed insights provided above, you’re now well-equipped to make an informed decision about whether this engine is right for you.

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Peter Banks

With years of experience as a professional mechanic and Subaru specialist, Peter is one of the most respected members of our team. He's written several articles on Subaru maintenance and repair, and his advice and tips are always practical and helpful. When he's not working on cars, he enjoys cooking and trying out new recipes.

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