2021 Subaru Legacy problems and complaints
Owners have filed 32 complaints with NHTSA about the 2021 Subaru Legacy. The most-reported areas: Unknown Or Other (8), Air Bags (6), Electrical System (5).
Key takeaways
- 32 owner complaints on file with NHTSA.
- 1 involve a crash, 0 a fire, 1 reported injury.
- Complaints are unverified owner reports; recalls are confirmed defects.
| Component | Complaints | Share |
|---|---|---|
| Unknown Or Other | 8 | 25% |
| Air Bags | 6 | 19% |
| Electrical System | 5 | 16% |
| Visibility/Wiper | 5 | 16% |
| Service Brakes | 3 | 9% |
| Engine | 2 | 6% |
| Power Train | 2 | 6% |
| Back Over Prevention | 2 | 6% |
| Forward Collision Avoidance | 2 | 6% |
| Suspension | 1 | 3% |
| Engine And Engine Cooling | 1 | 3% |
| Seats | 1 | 3% |
One complaint can name several components, so shares add up to more than 100%.
Parts for the 2021 Subaru Legacy
GarageDex's verified specs for this car. Each Buy button searches Amazon for that exact part.
- Battery
- Engine oil
- Oil filter
- Engine air filter
- Cabin air filter
- Wiper blades
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| Version | Overall | Front | Side | Rollover |
|---|---|---|---|---|
| 2021 Subaru Legacy 4 DR AWD | 5/5 | 5/5 | 5/5 | 5/5 |
Latest complaints, as filed
Owner-written and unverified by NHTSA.
Unknown Or Other,service Brakes - filed 2026-11-04
Vehicle was being slowly accelerated in preparation to park. The car was moving slowly up a rocky driveway. Upon application of brake, vehicle accelerated and lunged into structure. Vehicle did come to a stop but not before collision. No airbags deployed either. Vehicle radio was on at the time. Damage to structu...
Engine - filed 2026-06-04
Vehicle: 2021 Subaru Legacy Base 2.5i Mileage:~65,000 miles My engine suddenly began making loud internal knocking/tapping noises with no warning lights, no overheating, and no prior symptoms. The vehicle immediately became unsafe to operate. I had it towed to a Subaru dealership, where technicians confirmed the noise ...
Suspension - filed 2025-11-24
See attached document for complaint.
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More for the 2021 Subaru Legacy
Complaints are reports filed by owners with the National Highway Traffic Safety Administration. NHTSA publishes them without verifying them, and counts rise with how many cars were sold, so compare years of the same model rather than different models. Crash ratings are NHTSA's own 5-Star Safety Ratings results.