How many miles per gallon does a 2.5 Outback get?

For most recent Outbacks powered by the 2.5-liter engine with a CVT, expect about 29 miles per gallon combined (roughly 26 mpg in city driving and 32 mpg on the highway).

How the numbers are determined and what varies

Fuel economy is measured by the Environmental Protection Agency (EPA) using standardized tests. Real-world results can differ based on driving conditions, tire choices, payload, and maintenance. The 2.5-liter Outback with all-wheel drive and a continuously variable transmission (CVT) is the baseline for these estimates, but year-to-year tweaks and optioned equipment can shift the numbers slightly.

EPA figures for recent 2.5L Outbacks

Representative figures

Below are representative EPA fuel economy figures for the current generation 2.5-liter Outback with AWD and CVT across recent model years.

• 2019–2024 Outback with 2.5L engine and CVT, AWD: 26 mpg city / 32 mpg highway / 29 mpg combined.


• 2025+ Outback with 2.5L engine and CVT, AWD: typically similar to previous years, around 26/32/29, with minor year-to-year variations.

Note: Figures can vary by trim, wheel size, and tire type. Always check the EPA ratings for the exact model year and configuration you’re considering.

What affects real-world mpg in daily use

Key factors to consider

Several factors influence how efficiently a 2.5L Outback actually uses fuel in everyday driving.

• Driving style: Smooth acceleration and steady speeds improve efficiency.


• Terrain and terrain mix: City stop-and-go traffic typically lowers mpg more than highway cruising.


• Tire size and condition: Wider tires or low inflation can reduce efficiency; proper tire pressure helps.


• Vehicle load: Heavier payload reduces mpg, especially in hilly areas.


• Maintenance and conditions: Regular maintenance, clean air filters, and proper oil changes support better fuel economy.

In practice, many drivers report real-world mpg that is a few mpg below or above the EPA estimates depending on these factors.

Additional context by year and configuration

Why the numbers matter for buyers

If you’re shopping for a used or newer Outback, note that engine choice, transmission, and drivetrain details matter for mpg. The 2.5L engine paired with the CVT and AWD is intended to balance efficiency with all-season capability, while higher-powered or different-tiesel trims may diverge in efficiency. Always verify the exact EPA rating for the precise model year and configuration you’re considering.

Summary

The 2.5-liter Subaru Outback, when paired with the CVT and all-wheel drive, typically posts about 29 mpg combined (around 26 mpg city and 32 mpg highway) in recent years. Real-world results vary with driving style, terrain, tires, and payload. For the most accurate expectation, check the EPA ratings for the specific model year and trim you’re evaluating.

How many miles per gallon does a 2.5 L Subaru Outback get?

The Subaru Outback with the 2.5L engine gets an EPA-estimated 26 MPG in the city and 32 MPG on the highway, for a combined 28 MPG. This is standard for the base, Premium, Limited, and Touring trims on recent models. Mileage may vary based on driving conditions and the specific model year, with a slight increase in highway MPG on 2021 and 2022 models (33 MPG). 
You can watch this video to learn about the real-world fuel economy of a turbo Subaru Outback Wilderness: 58sDaily MotorYouTube · Dec 28, 2021

• City: 26 MPG
• Highway: 32 MPG
• Combined: 28 MPG
• Note: Some model years, such as 2021 and 2022, achieved 33 MPG on the highway. 

What is the fuel consumption of Subaru 2.5 L?

The 2025 Subaru Forester delivers 9.1 L/100km in city driving and 7.2 L/100km on the highway with its 2.5L BOXER engine.

What is the life expectancy of a Subaru 2.5 engine?

A Subaru 2.5L engine typically has a lifespan of 200,000 to 300,000 miles when properly maintained. However, a known issue with certain model years (especially 1996-2012) is head gasket failure, which can lead to engine damage and premature failure if not addressed. Proper maintenance, including regular oil changes, is crucial for longevity. 
You can watch this video to learn about a common engine issue that can affect the lifespan of a Subaru engine: 1mScotty KilmerYouTube · Nov 4, 2022
Factors affecting engine life

• Head gasket issues: The EJ25 head gasket was a known problem in many 2.5L engines between 1996 and 2012. Failure could occur between 60,000 and 150,000 miles. Newer models have improved designs, but it's still a factor to be aware of, especially with older engines. 
• Maintenance: Regular maintenance, such as oil changes, fluid checks, and tune-ups, is the most critical factor in extending engine life. 
• Driving habits: Avoiding aggressive driving, sudden starts and stops, and driving within the speed limit can also help the engine last longer. 
• Tire care: Keeping tires properly inflated and rotating them regularly helps the entire vehicle, including the engine, last longer. 

Extending your engine's life

• Follow the maintenance schedule: Adhere strictly to the manufacturer's recommended service intervals for oil changes and other fluid services. 
• Address issues promptly: If you notice any signs of problems, such as overheating or oil leaks, have them diagnosed and repaired by a qualified mechanic immediately. This can prevent minor issues from becoming major engine-damaging ones. 
• Consider repairs: For engines with older head gasket designs, getting the head gaskets replaced proactively can be a worthwhile investment to ensure long-term reliability. 
• Drive responsibly: Avoid hard acceleration and harsh braking whenever possible. 

Is the Subaru 2.5 engine a good engine?

The Subaru 2.5L engine is generally considered a good, reliable engine, especially in its newer iterations. However, older models had a reputation for head gasket issues, which has been largely addressed in engines made after approximately 2010. While the 2.5L is a dependable engine for everyday use, some find its performance underwhelming for spirited driving, preferring the turbocharged models instead.
 
Reliability and known issues

• Older models (pre-2010): Had a higher incidence of head gasket failure due to factory defects. Proper maintenance, including regular fluid checks, is crucial. 
• Newer models: Have more durable gaskets and significantly improved reliability. Newer versions of the FB25 engine can have oil consumption issues, which is often linked to the PCV system and can be managed with proper maintenance. 
• Long-term potential: With proper maintenance, including regular oil changes and fluid checks, Subaru 2.5L engines can be very reliable and last for 200,000–300,000 miles or more. 

Performance and fuel economy

• Performance: The 2.5L is a capable engine for daily driving but is not considered powerful or "fun to drive". It lacks the performance of the turbocharged engines.
• Fuel Economy: Offers better fuel economy than the turbocharged versions. 

Important considerations

• CVT transmission: Some drivers have reported mixed results with the Continuously Variable Transmission (CVT) paired with the 2.5L engine. 
• Maintenance: Regular maintenance is key to maximizing the life of any Subaru engine. This is especially true for older models with a history of head gasket problems.