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2021 SUBARU LEGACY Problems

Real NHTSA owner complaints for the 2021 Subaru Legacy. This model year has 30 NHTSA complaints β€” top issue: Uncategorized Issues.

30
Complaints
β€”
Crashes
β€”
Fires
1
Injuries
β€”
Deaths
3
Recalls

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This page shows the model year's reputation. The VIN tells you about the specific car β€” accidents, title issues, odometer rollbacks, and open recalls.

Worst 2021 Subaru Legacy Problems

Top 3 most-reported issues with average mileage at failure.

#1
7
complaints

Uncategorized Issues

Injuries:1
#2
6
complaints

Airbag Malfunctions

#3
5
complaints

Electrical Faults

Considering a 2021 Subaru Legacy?

This page shows the model year's reputation. The VIN tells you about this specific car β€” accidents, title issues, odometer fraud. Full report just $4.99 (vs. Carfax $44.99).

All Problems by Category

Every NHTSA complaint category for the 2021 Subaru Legacy. A single complaint may appear in multiple categories.

ComponentComplaintsCrashesFiresAvg MileageVolume
Uncategorized Issues7β€”β€”β€”
Airbag Malfunctions6β€”β€”β€”
Electrical Faults5β€”β€”β€”
Visibility/Wiper5β€”β€”β€”
Transmission / Drivetrain2β€”β€”β€”
Engine Problems2β€”β€”β€”
Back Over Prevention2β€”β€”β€”
Brake System2β€”β€”β€”
Forward Collision Avoidance: AEB2β€”β€”β€”
Suspension Failures1β€”β€”β€”
Seat-Related Issues1β€”β€”β€”
Unintended Acceleration1β€”β€”β€”
Equipment1β€”β€”β€”
Seat Belt Issues1β€”β€”β€”
Structural Problems1β€”β€”β€”
Visibility1β€”β€”β€”

Source: NHTSA Complaints Database. Complaint counts may exceed total complaints because one report can span multiple categories.

Search Owner Complaints

Read what owners actually reported to NHTSA for the 2021 Subaru Legacy. Type a keyword (e.g. β€œtransmission”, β€œstalling”, β€œbrakes”) to filter.

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Showing 30 most recent complaints

Suspension FailuresNov 24, 2025

See attached document for complaint.

Transmission / DrivetrainNov 21, 2025

Car intermittently will studder and not go into first gear or go into second gear dangerously having car bog down and almost stall and then it violently downshifts having car RMP Hague go very high then slip and have no power to wheels and then a few seconds later go into second …

Engine ProblemsOct 27, 2025

The contact owns a 2021 Subaru Legacy. The contact stated that while driving at various speeds during colder weather, the heater failed to operate as intended. Additionally, the Eyesight system was inoperable. The check engine and other unknown warning lights were displayed. In a…

Transmission / DrivetrainJul 21, 2025

CVT Transmission Failure. Failure occurred at approximately 66,706 miles on 5/16/25. The Check Engine and AT Temp lights appeared in the instrument cluster. The driving conditions when this happened were a safety concern. First, the vehicle would crawl, shutter, and almost st…

Engine ProblemsJul 7, 2025

Subaru has released a service bulletin regarding concerns with the Thermo Control Valve in specific vehicles. Unfortunately, individuals with vehicles bearing a rebuilt title, including myself, are required to cover expenses exceeding $2,000 out of their own pockets. Despite evid…

Airbag MalfunctionsFeb 18, 2025

The contact owns a 2021 Subaru Legacy. The contact received notification of NHTSA Campaign Number: 24V227000 (AIR BAGS); however, the part to do the recall repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall rep…

Uncategorized IssuesDec 28, 2024

Dear NHTSA Team, I am writing to report a recurring and distressing issue with my Subaru Legacy 2021 which I believe raises significant safety concerns. Since purchasing the vehicle, I have experienced consistent problems with the battery. Despite replacing the battery five tim…

Airbag MalfunctionsNov 29, 2024

A Recall was issued Mar 22, 2024 for a dangerous safety issue. AN AIR BAG That Does NOT Deploy During A Crash CAN Increase THE Risk OF Injury. Remedy Dealers Will Replace THE ODS Sensors ON THE Front Passenger Seat, Free OF Charge. Interim Letters Informing Owners OF THE Safety …

Airbag MalfunctionsNov 12, 2024

Subaru has failed to remedy recall on airbags.

Electrical FaultsNov 3, 2024

ODS sensor recall still not fixed/remedy available, used heat for first time since i purchased the car, minor cracks in the windshield, car radio/monitors randomly go black, reverse camera won’t work, restarts on there own after a while

Uncategorized IssuesJul 29, 2024

Without any reason a random issue came up. Special feature components lit up on dashboard. Everything but β€œcheck engine lit up and the car features were disabled. Disabled items were eye sight, lane assist, ABD, electrical parking brake, hill assist, vehicle dynamics control. Wit…

Electrical FaultsJun 17, 2024

recall not fixed yet, what happens if a car hits me & the passenger airbags don’t work? unsafe, doesn’t seem like it’s being fixed in a timely manner

Airbag MalfunctionsJun 11, 2024

The contact owns a 2021 Subaru Legacy. The contact received notification of NHTSA Campaign Number: 24V227000 (Air Bags); however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reason…

Unintended AccelerationMay 14, 2024

After shifting my car into reverse, I slowly started removing my foot from the brake pedal. At this time, the car started rapidly accelerating backwards so I put pressure back on the brake pedal to stop the car. When doing so, the ABS light came on my dashboard, I heard a gridin…

Brake SystemMar 17, 2023

2021 SUBARU LEGACY TOURING. CONSUMER WRITES IN REGARD TO ISSUES WITH THE REAR AUTOMATIC BRAKING SYSTEM (RAB). See attached document for complaint

Seat Belt IssuesFeb 17, 2023

The buckle stopped working without cause. Car is only a couple years old and my child attempted to buckle themselves only to find out it didn't lock after trying to buckle in. I took car to subaru dealership and was told that they had no idea why it stopped working and it was not…

Visibility/WiperJul 15, 2022

Three times within a 1 year period, the windshield cracked without an object hitting it. First time in July, 2021, second time in September, 2021, and third time in June, 2022. After the first time, I had the windshield replaced at my own expense. The second time, Subaru complete…

Uncategorized IssuesJun 22, 2022

spontaneous windshield crack. parked the car at night and there was nothing wrong with the windshield. Next day i go to drive and there is a seven inch crack starting mid way up the screen on the passenger side. There is no sign of an impact and the crack is very wide. I can get …

Forward Collision Avoidance: AEBJun 2, 2022

The car's AEB system keeps mistaking steam from the street (such as sewer covers or construction sites) for a physical object and will activate. It has stopped my car in the middle of the street two days ago (5/31/22) and I was almost rear-ended by the car behind me. The warnin…

Structural ProblemsMar 21, 2022

The trunk does not stay open leading to sudden closing on body and head for anyone trying to use the trunk. Leading to a concussion and multiple injuries. Dealership said to place a complaint as there has not yet been a recall for this issue. There is no warning prior to this iss…

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Source: NHTSA Complaints Database. Real owner reports for the 2021 Subaru Legacy.

Recalls for 2021 Subaru Legacy

3 campaigns

NHTSA recall campaigns for the 2021 Subaru Legacy. Recalls are free to fix at any authorized dealer. Run a VIN check below to see if your specific vehicle has open recalls.

22V485000Aug 7, 2022
POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)

23V755000Sep 11, 2023
POWER TRAIN:AUTOMATIC TRANSMISSION:PARK/NEUTRAL START INTERLOCK SWITCH

24V227000Invalid Date
AIR BAGS:SENSOR:OCCUPANT CLASSIFICATION:FRONT PASSENGER

2021 Subaru Legacy β€” FAQ

Answers based on real NHTSA complaint and recall data for this specific model year.

Is the 2021 Subaru Legacy reliable?β–Ύ

Good Record. The 2021 Subaru Legacy has 30 NHTSA owner complaints, 0 crash-related, and 3 recall campaigns. The most reported issue is Uncategorized Issues (7 complaints). Source: NHTSA via VinSpector AI.

What are the most common problems with the 2021 Subaru Legacy?β–Ύ

#1: Uncategorized Issues (7 complaints). #2: Airbag Malfunctions (6 complaints). #3: Electrical Faults (5 complaints)

At what mileage do problems start on the 2021 Subaru Legacy?β–Ύ

Mileage data is not available or insufficient for this model year.

How safe is the 2021 Subaru Legacy?β–Ύ

The 2021 Subaru Legacy has 0 crash-related complaints and 0 fire reports out of 30 total NHTSA complaints. 1 injuries were reported. For NCAP lab crash test star ratings, visit nhtsa.gov/ratings.

Does the 2021 Subaru Legacy have any recalls?β–Ύ

Yes β€” 3 NHTSA recall campaigns affect the 2021 Subaru Legacy. The largest issue: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Check nhtsa.gov/recalls or run a VIN check to see if your specific vehicle has open recalls.

Should I buy a 2021 Subaru Legacy?β–Ύ

The 2021 Subaru Legacy has a relatively low complaint rate. Pay particular attention to Uncategorized Issues issues. Always run a VIN check on the specific car you're considering to check for accident history, open recalls, and title brands.

Source: NHTSA (National Highway Traffic Safety Administration) complaint and recall databases, aggregated by VinSpector AI.

Wider context: See the full Subaru Legacy reliability report with year-by-year comparison.

Check Your Specific 2021 Subaru Legacy

Real owner complaints tell you about the model. The VIN tells you about your specific car β€” accidents, title issues, odometer fraud. Full report just $4.99.