Does the 4 cylinder Subaru Outback have enough power?

Yes—primarily. The base 2.5-liter engine provides adequate daily power, while the 2.4-liter turbo adds brisk acceleration and improved towing capability. The best choice depends on how you plan to use the vehicle and how important quick passing power is to you.

The Outback’s four-cylinder lineup centers on two engines: a naturally aspirated 2.5-liter flat-four and a turbocharged 2.4-liter flat-four. Both drive through Subaru’s symmetrical all-wheel drive and a continuously variable transmission (CVT). This article breaks down horsepower, torque, real-world performance, towing capacity, and efficiency for current models (2024–2025), so you can gauge whether the power meets your needs.

Powertrains and numbers

The Outback offers two four-cylinder engines. The base engine prioritizes efficiency and smooth everyday performance, while the turbo adds substantial torque for quicker launches and stronger highway passing. Both engines pair with the same CVT and standard all-wheel drive, but the driving experience changes with the turbo’s extra twist.

• 2.5-liter naturally aspirated flat-four: about 182 horsepower and 176 lb-ft of torque; paired with a CVT; standard AWD.


• 2.4-liter turbocharged flat-four: about 260 horsepower and 277 lb-ft of torque; CVT with automatic sportShift options; requires premium gasoline on most trims.


• Transmission and drivetrain: all Outbacks use Subaru’s symmetrical AWD and a user-selectable drive mode system; the turbo version feels notably more responsive at lower rpm ranges.


• Model-year variations: horsepower and torque figures can shift slightly with updates or tuning, but the above numbers reflect the current lineup into 2024–2025 models.

What these numbers mean in practice is that the turbocharged engine delivers substantially more torque early in the rev range, which translates to stronger acceleration and easier highway merging, especially when the vehicle is loaded or towing. The base engine, while competent for daily driving, trails the turbo in acceleration and overtaking capability.

Engine details and how power is delivered

Power delivery in the Outback is heavily influenced by the CVT, which keeps the engine in its optimal rev range for efficiency or torque as needed. In everyday driving, the base engine provides adequate response for city and highway trips, while the turbo’s torque helps with quick moves at highway speeds and when climbing grades with passengers or cargo.

Real-world performance

When you’re behind the wheel, the difference between the two engines becomes immediately noticeable. The turbo model feels livelier off the line and maintains momentum on hills and with extra weight in the cabin or cargo area. The base engine remains comfortable and predictable but can feel mellow during quick passes or when merging at highway speeds.

• 0-60 mph times (approximate): 2.5L around 8 to 9 seconds; 2.4L turbo roughly 6 to 7 seconds depending on trim and conditions.


• Driving character: turbo models exhibit stronger torque delivery from around 2,000–2,500 rpm, which helps with overtaking and merging; base models rely more on steady throttle and highway wind resistance.


• Noise and refinement: turbo models produce more engine note under load, while the base engine tends to be quieter at steady speeds.

In daily commuting and light off-road work, both engines provide a comfortable, stable ride with confident all-wheel-drive traction. The turbo’s advantage shows up when you need faster passes, steeper climbs, or when towing modest loads.

Towing and payload

Outback towing capability is a meaningful differentiator between the engines. When properly equipped, the turbocharged version can haul more weight, which matters for outdoor enthusiasts who tow small campers or boats.

• 2.5-liter engine: maximum towing capacity around 2,700 pounds when properly equipped.


• 2.4-liter turbo engine: maximum towing capacity up to 3,500 pounds when properly equipped.


• Practical notes: towing with either engine benefits from proper hitch setups, weight distribution, and adhering to Subaru’s tow guidelines and recommended grades.

For most daily drivers who aren’t routinely towing near the limits, the base engine is perfectly adequate. The turbo option is the sensible choice if your needs include heavier towing or consistently strong acceleration with cargo aboard.

Fuel efficiency and operating costs

Fuel economy is a key factor in deciding between engines. The base engine tends to deliver better efficiency, while the turbo can trade some fuel economy for added power. EPA estimates vary by year, trim, wheel size, and tires, but typical ranges are:

• 2.5-liter engine: roughly mid-20s to high-20s in MPG combined, with higher numbers on models optimized for efficiency and the lowest rolling resistance.


• 2.4-liter turbo engine: roughly mid-20s MPG combined, with city mileage impacted more by turbo usage and premium fuel requirements on many trims.

Real-world fuel costs depend on your driving habits, loads, and whether you routinely use premium gasoline for the turbo model. The base engine generally offers the lowest operating costs, while the turbo incurs higher fuel and maintenance considerations, balanced by stronger performance.

Who should choose which engine?

1. If most of your driving is urban commuting with occasional highway trips and you value efficiency, the 2.5-liter base engine is a practical pick.


2. If you want quicker acceleration, confident highway passing, and the ability to tow moderate loads, the 2.4-liter turbo is the better choice.


3. If you plan to tow near the upper end of the Outback’s capacity regularly, go with the turbo and ensure you’re equipped properly for towing.


4. If you frequently drive with a full payload of passengers and cargo and want a balanced feel with solid torque, test both and compare how each engine delivers in person.

In the end, the “enough power” question hinges on your priorities. For most buyers, the Outback’s two four-cylinder options cover everyday needs well, with the turbo delivering a clear performance bump for those who value quick response and higher towing limits.

Summary

The 4-cylinder Subaru Outback offers two distinct power options: a capable 2.5L naturally aspirated engine and a much more powerful 2.4L turbo. The base engine suits daily driving and efficiency, while the turbo provides stronger acceleration and higher towing capacity. Real-world performance reflects these differences, with the turbo delivering noticeably brisker acceleration and better hill-climbing ability, at the cost of slightly lower fuel efficiency and higher fuel costs. For most users, power is adequate, but for those who prioritize speed, cargo, or towing, the turbo model is the smarter pick. Always consider your typical use, payload, and fuel preferences when choosing between engines.

What year to stay away from a Subaru Outback?

You should be wary of Subaru Outback years such as 2013–2014, 2017–2018, and 2020 due to common problems like excessive oil consumption, transmission issues, and electrical faults. Additionally, the 2010–2011 models may have transmission, engine, and brake line problems. Older generations, like 2005–2009, are known for head gasket issues and oil leaks.
 
2010–2014

• Excessive oil consumption: The 2013 and 2014 models are frequently cited for this issue, which was due to faulty piston rings and can lead to engine failure. 
• Transmission issues: Both the 2010 and 2012 models are reported to have transmission problems, including rough shifting and failure. The 2010 is also known for torque converter issues. 
• Electrical problems: Some models in this range have reported electrical faults. 
• Headlight issues: 2011 models, in particular, had problems with headlights that burned out or melted. 
• Brake line issues: The 2010 model had issues with faulty brake lines. 

2017–2020 

• Electrical issues: These models were plagued with electrical system problems, from the 2017 and 2020 models. 
• Weak windshields: The 2017 and 2020 models are notorious for easily cracked windshields. 
• Transmission problems: Some owners reported issues with the Continuously Variable Transmission (CVT) in the 2017 and 2020 models. 
• Fuel range display malfunction: Some 2018 models had issues with the fuel pump and the fuel range display. 

Older generations

• 2005–2009: These models are known for costly head gasket failures, engine leaks, and catalytic converter failures. 
• 1994–1999: This generation had issues with cracked cylinder heads and premature engine failure. 
• 2000–2001: This period is when Subaru was transitioning ownership, leading to transmission issues in these models. 

Modern models (2015+)

• While later models generally saw improvements, some issues persist. The 2023 Outback had problems with the infotainment system, and the 12V battery was prone to draining. 

Is the Subaru 2.5 L 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. 

Is the Subaru 2.4 Turbo a good engine?

Yes, the Subaru 2.4-liter turbo is generally considered a good and reliable engine, offering strong performance with dependable long-term reliability, though some minor issues like oil leaks have been reported. It provides significantly more power than the non-turbo 2.5L, which is better for towing and spirited driving, but may have slightly lower fuel economy. Overall, its performance and reliability make it a good choice, especially for drivers who need more power.
 
You can watch this video to learn about the performance and reliability of the Subaru 2.4L turbo engine: 55sAuto Expert John CadoganYouTube · Sep 21, 2022
Benefits of the 2.4L turbo engine

• Strong performance: It provides a noticeable increase in horsepower and torque, making it better for merging, passing, and towing. 
• Reliability: It is generally seen as a dependable engine with a low failure rate compared to the average turbo engine. 
• Towing capacity: The added power makes it a better choice for towing. 

Potential downsides

• Fuel economy: It typically has lower fuel efficiency compared to the non-turbo 2.5L engine. 
• Cost: The turbo version may be more expensive than its naturally aspirated counterpart. 
• Maintenance: Some minor issues like oil leaks can occur with age, but this is often considered normal wear and tear and can be managed with regular maintenance. 

What to consider

• Your driving needs: If you frequently tow or prefer strong acceleration, the 2.4L turbo is an excellent choice.
• Your driving priorities: If fuel economy and a lower purchase price are more important, the non-turbo 2.5L engine may be a better fit. 

How much horsepower does a 4 cylinder Subaru Outback have?

The 2024 Subaru Outback features an available 2.4L SUBARU BOXER turbocharged four-cylinder engine that can provide an improved ride during your rugged adventures. This engine is capable of delivering a robust 260 horsepower and 277 pound-feet of torque.