What engine is in a Subaru Impreza?
The Subaru Impreza’s current powerplant is a 2.0-liter horizontally opposed four-cylinder engine (a boxer) from Subaru’s FB engine family, delivering about 152 horsepower in most recent models. This engine is paired with Subaru’s symmetrical all-wheel-drive system for stable handling.
Over the model’s history, Impreza engines have evolved. Modern Imprezas typically use the 2.0-liter FB20 engine, while earlier generations relied on the EJ-series flat-four engines in various displacements. Transmission options have included a continuously variable transmission (CVT) in most newer models, with a manual transmission offered on some older trims.
Current engine details
Engine family and performance
The latest Impreza trims commonly use the 2.0-liter FB20 boxer engine. It is naturally aspirated and typically rated around 152 horsepower and 144 lb-ft of torque. The engine’s flat configuration helps maintain a low center of gravity, which complements Subaru’s standard all-wheel-drive system.
Transmission pairing varies by year and trim. A CVT is the most common automatic option, while a manual gearbox has been available on select, older trims.
- 2.0-liter flat-four (FB20) engine
- Boxer configuration for a low center of gravity and balanced AWD dynamics
- Typical outputs around 152 hp and 144 lb-ft of torque in recent models
- CVT is the standard automatic option in most recent years; manual was available on some older trims
The contemporary Impreza engine lineup emphasizes efficiency and reliability, while preserving Subaru’s hallmark all-wheel-drive performance.
Historical engine options
EJ-series legacy
In the earlier generations, the Impreza used Subaru’s EJ-series flat-four engines, offered in displacements such as 1.6L, 1.8L, and 2.5L. These engines were paired with manual or automatic transmissions and shared the horizontally opposed layout and AWD that defined the model.
As the model evolved, Subaru migrated to the FB family (beginning in the 2010s) for the 2.0-liter engine that powers most modern Imprezas.
- EJ-series 1.6L, 1.8L and 2.5L flat-four engines
- Strong AWD integration and a range of outputs depending on displacement and tuning
- Transition to FB20 2.0L for most modern Impreza models in the 2010s and beyond
Engine technology in the Impreza follows Subaru’s broader strategy: a boxer engine paired with AWD, optimized for balance, efficiency, and winter-road capability.
Summary
The Impreza’s engine lineup centers on the boxer configuration. In contemporary models, the 2.0-liter FB20 engine powers most trims, delivering roughly 152 hp with 144 lb-ft of torque and is typically paired with a CVT. Older generations used EJ-series engines (1.6L–2.5L) with varying outputs. Transmission options vary by year, but CVT is common in modern models, with manual transmissions appearing on some earlier trims.
What is the biggest issue with a Subaru Impreza?
Top Subaru Impreza Problems
- Subaru Front O2 Sensor Recall.
- Improved Spark Plug Wires for Misfire Issues.
- Check Engine Light Due to Failed Knock Sensor.
- Cooling System Problems Cause Head Gasket Failure.
- Subaru Impreza passenger seatbelt light and alarm issue persists with no passenger present, potentia...
What engine does the Subaru Impreza have?
In base form with the 2.0-liter Subaru Impreza engine, expect to achieve up to an EPA-estimated 27/34 MPG (City/Highway)1 in your new hatchback. Both the Base and Sport trims earn this excellent gas mileage rating.
How long will a Subaru 2.0 engine last?
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.
Which Subaru has a 2.5 L engine?
Subaru Engines by Model
Outback: This model typically features a 2.5-liter four-cylinder engine, though higher trims house a 2.4-liter turbocharged version. Forester: The Subaru Forester boasts a 2.5-liter four-cylinder engine.
