2021 Subaru Legacy Reliability ReportKeepScore 88/100 · top failure points · buy or avoid
Quick Facts · 2021 Subaru Legacy
- Scores roughly in line with adjacent Subaru Legacy years — consistency that often signals a stable platform generation.
- The system most likely to surface first: infotainment system (minor severity).
- Has 3 NHTSA recalls on record — the most notable involves the power train:automatic transmission:control module (tcm/pcm/tecm).
2021 Subaru Legacy: Buy or Avoid?
The 2021 Subaru Legacy is a supremely dependable mid-size sedan, offering standard symmetrical all-wheel drive and a comprehensive suite of safety features, making it one of the safest and most practical used sedans you can buy. While minor electrical glitches and the long-term wear of its CVT warrant attention, this vehicle represents a sound investment for reliability-focused buyers seeking all-weather confidence and low operational stress.
The 2021 Subaru Legacy is an outstanding choice for those prioritizing safety, all-weather capability, and proven long-term reliability. Its few minor drawbacks are well-documented and manageable, making it a smart and sensible used car purchase that will serve faithfully for many years and miles. This is a solid, n…
Best Model Years
2020-Present (post-redesign 7th generation)
Years to Avoid
None for the 7th generation (2020+); earlier generations had more reported head gasket/oil consumption issues before 2013, but the 2021 is solid.
Biggest Strengths
- Standard Symmetrical All-Wheel Drive system's robustness
- Subaru EyeSight Driver Assist Technology's efficacy and reliability
- Strong structural integrity and proven crashworthiness
2021 Subaru Legacy — Known Trouble Spots
The systems that tend to fail first on the 2021 Subaru Legacy, with the typical mileage window when each becomes a concern. Detailed repair-cost ranges and exact what-to-check inspection notes are in the full report.
Owners frequently report screen freezing, Apple CarPlay/Android Auto disconnections, and general sluggishness. While often resolved with software updates, it can be a persistent annoyance. This is primarily a software/firmware issue, not…
While much improved, the CVT can develop whine or shudder as it accumulates higher mileage, particularly if fluid changes are neglected. Early failures are rare but costly. Heat is the enemy, so demanding driving or heavy towing (not typ…
A long-standing Subaru characteristic, front and sometimes rear wheel bearings can develop noise and require replacement. While less prevalent on newer models, it's still a wear item to monitor, often exacerbated by driving conditions or…
2021 Subaru Legacy Mileage Danger Zones
The mileage windows when the 2021 Subaru Legacy most commonly needs attention. Plan ahead, budget accordingly, and inspect before you cross each threshold.
Low Risk Zone
At this mileage, the car is still very new. Focus is on routine maintenance like oil changes, tire rotations, and cabin air filters. Any issues are likely covered by the factory warranty (3yr/36k mile basic).
Maintenance Zone
This mileage often marks the end of the powertrain warranty (5yr/60k miles). Key maintenance items like spark plugs (for 2.4L Turbo), differential fluid, and potentially CVT fluid service become due. This is where diligent maintenance hi…
Elevated Risk Zone
While still generally reliable, components like suspension bushings, control arms, and potentially the starter or alternator can begin to show wear. Regular checks of drive belts, hoses, and fluids become more critical. This is where rep…
High Risk Zone
Beyond this point, major components like the CVT, head gaskets (though less common on FB-series engines), or engine mounts may require attention. Repair costs can become significant if major drivetrain components fail. Proactive replacem…
2021 Subaru Legacy Ownership Cost Outlook
What it typically costs to keep the 2021 Subaru Legacy on the road. Full 5-year cost-of-ownership projection and major-failure-risk forecast are in the report.
Annual Maintenance
$450-650
Moderate Repairs
$600-1,800 occasionally (e.g., wheel bearings, brake overhaul, minor sensor)
How Long Does the 2021 Subaru Legacy Last?
A well-maintained 2021 Legacy can comfortably exceed 150,000 miles, but ensure meticulous service records for vehicles approaching or surpassing 60,000 miles, with specific attention to CVT fluid service.
What 2021 Subaru Legacy Owners Actually Say
What Owners Love
- Unmatched confidence and grip in snow and rain thanks to Symmetrical AWD.
- Excellent safety record and the peace of mind provided by EyeSight features.
- Spacious and comfortable interior with good rear legroom for a mid-size sedan.
- Smooth ride quality that soaks up road imperfections effectively.
Common Frustrations
- Infotainment system can be laggy and prone to freezing, detracting from user experience.
- CVT drone can be noticeable under hard acceleration, affecting perceived refinement.
- The 2.5L engine, while reliable, can feel underpowered for some drivers, particularly at highway speeds.
- Some interior materials, particularly around the center console, feel less premium than competitors.
Who Should Buy the 2021 Subaru Legacy?
Best For
- Families seeking a safe and reliable daily driver.
- Commuters in regions with harsh winter weather or frequent rain.
- Practical-minded buyers who value safety features and AWD.
Not Ideal For
- Performance enthusiasts seeking an exhilarating driving experience.
- Buyers prioritizing luxury interior materials and absolute quietness.
How the 2021 Subaru Legacy Compares to Rivals
The Legacy's standard AWD system gives it a distinct advantage in adverse weather over its direct FWD competitors like the Camry and Accord, while its overall reliability is on par or slightly better than many peers, especially for powertrain components.
More Reliable Than
- Nissan Altima (earlier CVT generations)
- Chrysler 200
- Kia Optima (pre-2020 engine issues)
Comparable To
- Honda Accord
- Toyota Camry (FWD versions)
Safety Recalls on the 2021 Subaru Legacy
3 recalls on record from NHTSA. Check your VIN atnhtsa.gov to see if the repair was performed.
POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)
Subaru of America, Inc. (Subaru) is recalling certain 2020-2021 Outback and Legacy vehicles. A programming error in the Transmission Control Unit (TCU) may allow the clutch to engage before the drive chain is completely clamped.
POWER TRAIN:AUTOMATIC TRANSMISSION:PARK/NEUTRAL START INTERLOCK SWITCH
Subaru of America, Inc. is recalling certain model year 2021 Crosstrek, 2022 Forester, 2021-2023 Legacy, and Outback vehicles. An insufficient weld may allow water to enter the inhibitor switch, causing it to fail.
What breaks on the 2021 Subaru Legacy?
Full reliability breakdown — engine, transmission, rust, electrical. With repair costs and mileage danger zones.
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Subaru Legacy — Year-by-Year Comparison
Compare KeepScores across nearby years of the Subaru Legacy. Click any year for its full report.
Competing 2021s Worth a Look
Similar class, similar year range — ranked by KeepScore.
Relevant Products for Your 2021 Subaru Legacy
Parts and accessories matched to your 2021 Subaru Legacy
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Frequently Asked Questions
Just bought a 2021 Subaru Legacy? Keep it that way.
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