Whats the most common problems with Subarus?

Subaru owners frequently report a few recurring trouble spots across generations: engine sealing issues and oil consumption on older EJ-series 2.5-liter engines, transmission reliability concerns (especially with the CVT), and routine maintenance needs like timing belt/water pump replacements. In short: engine head gaskets, transmission reliability, and ongoing maintenance drive the most common complaints.

Engine and powertrain concerns

Across generations, certain Subaru engines have earned a reputation for gasket failures and oil-related issues that can lead to leaks, overheating, or oil contamination. The following items reflect the most commonly reported engine-related problems with Subarus.

• Head gasket failures on many EJ-series 2.5-liter engines, particularly in late-1990s to early-2000s models (e.g., certain Impreza/Legacy/Outback variants), which can cause coolant leaks, milky oil, overheating, and misfires.


• Notable oil consumption and leaks on some 2.0L and 2.5L engines depending on generation, with owners sometimes needing more frequent oil top-ups or repairs after high mileage.


• Oil leaks from valve covers, cam seals, or other seals as engines age, often appearing after 100k miles and requiring gasket or seal replacement.

Addressing leaks promptly, using the recommended fluids, and following Subaru’s maintenance schedule helps reduce the risk of major engine damage. Some later production runs and recalls addressed gasket concerns in certain engines.

Transmission and drivetrain concerns

Subarus rely heavily on their all-wheel-drive system and, in many models, a CVT (Lineartronic). Owner reports highlight transmission behavior and maintenance as key reliability drivers, with variability by model year.

• CVT reliability issues in certain 2010s models, including shudder, slipping, or warning-light concerns, which in some cases require fluid changes, software updates, or transmission replacement.


• CVT belt wear and failures in some vehicles around mid-life mileage, with later revisions generally improving durability but still carrying higher maintenance costs compared with conventional automatics.


• Manual transmission concerns on earlier or higher-tin models, such as occasional difficulty with gear engagement or grinding noises, though many manuals remain robust with proper maintenance.

Regular CVT fluid changes per Subaru’s schedule, avoiding aggressive driving, and staying current with software updates can help extend transmission life. Many newer models benefited from refinements that improved reliability, though maintenance remains important.

Maintenance and aging components

Older Subarus with higher mileage often require attention to components that wear with time, including belts, seals, and structural wear, which can influence perceived reliability.

• Timing belt and water pump replacement on non-turbo engines (such as certain 2.0L/2.4L/2.5L versions) at manufacturer-recommended intervals to prevent overheating or engine damage.


• Aging gaskets and seals that can develop oil leaks from valve covers, oil separators, and other seals, especially after high mileage.


• Wheel bearing wear and related noises in some models, commonly noticeable in the 80k–120k mile range depending on usage and road conditions.

Sticking to scheduled maintenance, including timing belt/water pump intervals and gasket replacements when indicated, helps prevent major failures and keeps aging Subarus reliable.

Electrical systems and electronics

As Subarus add more infotainment and safety electronics, intermittent electrical issues and component failures become more noticeable with age.

• Sensor and software-dependent features—such as blind-spot monitoring, adaptive cruise control, or stability control—can trigger warning lights or require calibration or component replacement.


• Power window regulators, door locks, and mirror assemblies that wear out with repeated use, potentially causing functional failures in aging cars.


• Infotainment and navigation systems experiencing glitches, reduced responsiveness, or display failures in older models with earlier-generation units.

Electrical problems can be intermittent; timely software updates and targeted component replacements often resolve many issues. Recalls or service campaigns may address known electronic faults.

Recalls, model-year considerations, and buying tips

recalls and safety campaigns cover various concerns across model years, so checking a vehicle’s recall history and service records is prudent when buying a Subaru used car.

• Front-end, airbags, pedal/brake-related recalls, and other safety-related campaigns span multiple model years; verify recall status for any vehicle under consideration.


• Engine and transmission-related updates addressed during service campaigns; confirm that any applicable updates have been performed by a dealer.

When shopping, verify recall completion through official databases, review maintenance records for signs of timely service, and consider model-year histories with known reliability improvements. A well-documented service history generally correlates with better long-term reliability.

Tips for buyers and owners

To minimize risk when buying or owning a Subaru, look for a documented history of head gasket repairs if applicable, confirm CVT health with a test drive and transmission analysis, ensure timely timing belt and water pump maintenance on affected engines, and check for any persistent oil leaks or consumption patterns. Conduct a pre-purchase inspection with a mechanic familiar with Subarus and verify that all recalls have been addressed.

Summary

Subarus offer solid all-wheel-drive performance and generally strong reliability when properly maintained, but they come with known risks around engine sealing, oil consumption, and CVT reliability. Regular maintenance, careful model-year selection, and thorough verification of recalls and service history can help buyers and owners maximize long-term satisfaction.

What years did Subaru have transmission problems?

While Subaru has improved its CVTs over the years, certain models are more prone to failures:

• 2010–2013 Subaru Outback & Legacy (First-generation Lineartronic CVT)
• 2013–2017 Subaru Crosstrek (Early FB20 engine models)
• 2014–2018 Subaru Forester (FB25 engine models)
• 2019+ Subaru Ascent (Higher torque load on the CVT)

What is the most common problem in Subarus?

The most common Subaru problems include issues with head gaskets, oil consumption, and transmission problems, particularly with older EJ engines and certain first-generation CVTs. Other frequent issues involve timing belt failures, electrical faults, and suspension wear. Many of these issues are more prevalent in specific older model years, though newer models can still experience problems like transmission wear.
 
This video discusses common issues with Subaru engines and transmissions: 58sThe OCD RepairmanYouTube · Jul 7, 2025
Engine and powertrain problems 

• Head gasket leaks: This is a notorious issue, especially in older models with EJ series engines, and can lead to coolant leaks, overheating, and other engine damage. 
• Engine oil consumption: Some models consume excessive oil, often due to worn piston rings or valve seals. 
• Timing belt failures: A failing timing belt can cause severe engine damage, and replacement should be done according to the manufacturer's schedule. 
• Transmission problems: Issues like slipping gears or rough shifting have been reported, particularly in some first-generation Lineartronic CVTs and certain models with higher torque loads. 

Other common issues

• Electrical issues: Various components can have faults, including sensors, alternators, and starters. 
• Suspension problems: Suspension components can wear out over time, leading to excessive noise, vibration, and poor handling. 
• Defective airbags: Some model years have had issues with airbags. 
• Faulty fuel pumps: Problems with fuel pumps have been reported in some models. 
• Weak windshields: Some owners have complained about the durability of the windshields. 

Tips to mitigate problems

• Perform regular maintenance: Consistent oil changes, fluid checks, and other scheduled maintenance can help prevent many issues and extend engine life. 
• Replace the timing belt on schedule: Adhering to the manufacturer's recommended timing belt replacement interval is crucial to avoid catastrophic engine damage. 
• Be mindful of specific model years: Researching specific model years for known problems can help you make a more informed decision, especially when buying used. 

What are the downsides of Subaru?

Common cons for Subaru include issues with transmission (especially CVTs), excessive oil consumption, and problems with head gaskets on older models. Other drawbacks can include lower fuel efficiency compared to some competitors, a reputation for weak interior quality and materials, potential electrical issues, and some complaints about infotainment systems. 
This video discusses several potential issues with Subaru vehicles, including transmission problems: 56sMrSubaru1387YouTube · Feb 2, 2025
Engine and transmission 

• Oil Consumption: Many Subaru engines, particularly turbocharged ones, can have issues with excessive oil consumption. 
• Head Gasket Failure: While mostly an issue with older models (pre-2012), head gasket failure remains a known potential problem that can lead to oil or coolant leaks. 
• CVT Transmission Issues: Subaru's continuously variable transmissions (CVTs) have a history of problems, with some models experiencing costly failures, overheating, or other issues. 
• Engine Stalling/Overheating: Some models have been associated with stalling or overheating problems. 

Interior and technology

• Interior Quality: Some owners report that the interior materials feel cheap, with hard plastics and flimsy trim, and that road noise can be a significant issue.
• Infotainment System: The Subaru Starlink infotainment system has been criticized for being difficult to use. 

Other issues

• Cracked Windshields: Some owners report a tendency for their Subaru windshields to crack prematurely. 
• Fuel Efficiency: Subaru vehicles are not always the most fuel-efficient, especially when compared to some competitors. 
• Electrical Problems: There are various reports of electrical problems, such as issues with the fuel pump or light switches. 

What years did Subaru have a bad engine?

Although Subaru has been challenged with engine issues, most of the issues were isolated to a few engines, namely the EJs that were in the Impreza, Forester, Legacy, Outback and Baja models between 1996 and 2005. The latest Subaru boxer engines are part of the FB series boxer engines.