Subaru Impreza Engine: Everything You Need to Know About This Impressive Powerhouse

If you’re a fan of Subaru Impreza or simply interested in cars, you might have heard about the impressive capabilities of its engine. The Subaru Impreza is a sporty compact car that packs a powerful punch under the hood. In this article, we will take an in-depth look at everything you need to know about Subaru Impreza engines, from their specs to performance and features.

Overview of the Subaru Impreza Engine

Subaru offers two different engine options for the Impreza: a 2.0-liter four-cylinder or a 2.5-liter four-cylinder engine. The base engine is a 2.0-liter Subaru BOXER® four-cylinder engine, which has a maximum horsepower of 152 and a torque of 145 pound-feet. The second engine option, the 2.5-liter turbocharged four-cylinder engine, has a maximum horsepower of 310 and produces a torque of 290 pound-feet.

Engine Type, Displacement, and Configuration

The engine type in the Subaru Impreza is a horizontally opposed BOXER® engine, which means that it has a flat design, with four cylinders that are arranged horizontally. This design produces less vibration compared to typical four-cylinder engines because the pistons are located opposite each other, by pairs, which gives the engine better balance. The displacement for the Subaru Impreza engine ranges between 2.0 to 2.5 liters.

Horsepower and Torque

The base 2.0-liter engine has a horsepower and torque output of 152 and 145 pound-feet, respectively. On the other hand, the turbocharged 2.5-liter engine trumps the base engine with an impressive power output of 310 horsepower and 290 pound-feet of torque. The engine’s impressive torque output is delivered across a broad range, which means that it supplies the necessary power for an excellent driving experience.

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Transmission Options

The Subaru Impreza comes in two transmission options; a 6-speed manual and a continuously variable transmission (CVT) with paddle shifters. The stick shift provides a more hands-on driving experience, whereas the CVT transmission with paddle shifters allows for easier handling and efficient fuel consumption.

Fuel Economy

The base engine provides an impressive fuel economy with the 2019 model returning 28 city / 38 highway mpg with the CVT and 24 city / 31 highway mpg with the manual transmission. The performance-focused 2.5-liter engine is less fuel-efficient but still offers a decent return, with the 2021 Impreza returning 22 city / 30 highway mpg.

Performance Features and Enhancements

The Impreza’s performance is further enhanced by Subaru’s symmetrical all-wheel-drive system, which provides superior traction on the road. It also has impressive features such as Active Torque Vectoring, which helps in cornering by applying brakes to the inside front wheel and transferring power to the outside front wheel. The Subaru Impreza also has an advanced suspension system that contributes to better performance and handling.

Maintenance Tips and Schedule

To keep the Impreza’s engine in top shape, we recommend following the manufacturer’s recommended maintenance schedule, which can be found in the owner’s manual. It includes regular oil changes, fluid checks, and the replacement of engine air filters. Regular maintenance not only helps in keeping your car running efficiently but also prevents any major repairs in the future.

Frequently Asked Questions (FAQs)

Q: What is the price range of the Subaru Impreza?

A: The Subaru Impreza is available in the market starting at around $19,000 up to $27,000 for the high-end version.

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Q: How reliable is the Subaru Impreza engine?

A: The Subaru Impreza engine is known for its reliability. Regular maintenance in line with the manufacturer’s recommendations would lead to long-lasting performance.

Q: Is the Subaru Impreza better as an all-wheel drive car?

A: Yes, the Impreza’s superior traction on the road results from the symmetrical all-wheel-drive system, making it the perfect car for driving in tough weather conditions.


In summary, the Subaru Impreza engine is a powerful machine and a wonder of engineering. It has a unique flat-four design that combines performance with fuel efficiency, making it a blast to drive on any road. The Impreza’s impressive features such as all-wheel drive traction, advanced suspension system, and Active Torque Vectoring greatly enhance its driving experience. By following the maintenance schedule, you can ensure that the Impreza’s engine runs at optimal performance.

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Alton Brobst

As a longtime Subaru enthusiast, Alton brings a wealth of knowledge and experience to our blog. From his early days of tinkering with engines to his current role as a certified Subaru technician, Alton has seen it all when it comes to Subarus. When he's not working on cars, he enjoys hiking and exploring the great outdoors.

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