OBD diagnostics · purchase protection

2021 Subaru Legacy
Common Problems & Inspection Guide

Verify baseline vehicle system stability data. Learn what to check on the physical vehicle computer before signing a bill of sale.

Connect Adapter & Check for Code Wipes

Platform Heritage

The Subaru Legacy (Japanese: スバル・レガシィ, Hepburn: Subaru Regashi) is a mid-size car built by Japanese automobile manufacturer Subaru from 1989 to 2025. The maker's flagship car, it is unique in its class for offering all-wheel drive as a standard feature, and Subaru's traditional boxer engine. In 1996, a variant of the Legacy with heightened suspension called the Legacy Outback was introduced to compete in the burgeoning sport-utility vehicle class, and proved to be a sales success for Subaru. The Outback line was split into its own model in 2000, known as the Subaru Outback. As of 2008, 3.6 million Legacy models have been built since its 1989 introduction. Production of the Legacy ended in Japan in June 2020, with the sixth-generation Legacy being the last model produced and marketed in Japan. Subaru of America announced in an internal email that 2025 will be the last model year for the Subaru Legacy. The Subaru Outback will remain in production, after being the company's top selling model in 2023. The Legacy was sold as the Liberty in Australia out of deference to Legacy Australia, an organisation dedicated to caring for the families of military service veterans.

Source: Wikipedia intro extract · as of Jun 19, 2026

Key facts for this model year

31NHTSA owner complaints
3Safety recalls on file
5Top issue reports · Unknown Or Other
$0Typical OEM recall remedy cost to you

~1.2k average monthly buyer searches in the US (google ads data · as of Jun 19, 2026). Run a MotoMetrics scan for your VIN to see live repair exposure.

Verify the data — open primary sources · as of Jun 19, 2026

System Defect Summaries & Field Data

Active safety recalls on file: 3 (source: NHTSA Recalls API · as of Jun 19, 2026)

Top NHTSA complaint categories

Recent recall summaries

Campaign 22V485000 · POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM) · API record

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.

Campaign 23V755000 · POWER TRAIN:AUTOMATIC TRANSMISSION:PARK/NEUTRAL START INTERLOCK SWITCH · API record

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.

Campaign 24V227000 · AIR BAGS:SENSOR:OCCUPANT CLASSIFICATION:FRONT PASSENGER · API record

Subaru of America, Inc. (Subaru) is recalling certain 2020-2022 Outback and Legacy vehicles. A capacitor in the sensors for the Occupant Detection System (ODS) may crack and short circuit, which can prevent the front passenger air bag from deploying in a crash.

YouTube voice themes below are research hints only — verify against NHTSA data before citing.

Search demand cross-check: ~1,190 avg monthly intent searches (source: google ads data · as of Jun 19, 2026)

On-Site Subaru Legacy Pre-Purchase Checklist

  1. Verify OBD-II readiness monitors are complete (not recently cleared) using a full protocol scan.
  2. Compare dashboard mileage to ECU-stored odometer modules where accessible.
  3. Pull permanent and pending DTCs — not only stored codes visible on the dash.
  4. Inspect systems related to UNKNOWN OR OTHER (NHTSA complaint cluster — verify during test drive and PPI).
  5. Inspect systems related to VISIBILITY/WIPER (NHTSA complaint cluster — verify during test drive and PPI).
  6. Inspect systems related to AIR BAGS (NHTSA complaint cluster — verify during test drive and PPI).
  7. Inspect systems related to ENGINE (NHTSA complaint cluster — verify during test drive and PPI).
  8. Inspect systems related to POWER TRAIN (NHTSA complaint cluster — verify during test drive and PPI).
  9. Confirm recall remedy completed for POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM) (campaign 22V485000).
  10. Confirm recall remedy completed for POWER TRAIN:AUTOMATIC TRANSMISSION:PARK/NEUTRAL START INTERLOCK SWITCH (campaign 23V755000).
  11. Confirm recall remedy completed for AIR BAGS:SENSOR:OCCUPANT CLASSIFICATION:FRONT PASSENGER (campaign 24V227000).
  12. Run a MotoMetrics on-site scan for Subaru Legacy before signing the bill of sale.

Alternative Inferences & Cross-Shopping Matrix

Adjacent model years for this nameplate and equivalent footprints shoppers compare across brands.

Generational cohorts

2018 Subaru Legacy

Class competitors

2021 About Us 2021 Acura Tlx 2021 Audi Q3 2021 Audi Q5 2021 Bmw 2 Series 2021 Bmw I3 2021 Bmw X1 2021 Bmw X3

Vehicle health varies wildly by individual history. Aggregate recall and complaint data cannot tell you whether the specific car on the lot had its monitors cleared or its odometer rolled back. Verify the physical or digital scan before you sign a bill of sale.

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