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2021 Subaru Legacy Maintenance guide

2021 Subaru Legacy Maintenance guide
v1.0Updated May 30, 2026·Daniel Wilson4 Sources Analyzed2 Critical Recalls
MAINTENANCE SUMMARY

The 2021 Subaru Legacy's primary maintenance concerns revolve around its windshield, prone to spontaneous cracking, and its electrical system, which can exhibit infotainment glitches and battery drain. Proactive inspection of the windshield and monitoring for electrical gremlins are crucial.

View Critical Issue: Air Bag System Faults
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Reliability Score

7.6/ 10

Est. Annual Maintenance Cost

$300 - $500

TSBs & Recalls

76 TSBs | 5 Recalls

SummaryMaintenance & CostsCommon FailuresSymptoms & PreventionKeep ReadingFAQSources

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Key Takeaways

  • Prioritize inspection and potential replacement of windshields due to a documented pattern of spontaneous cracking.
  • Be vigilant for electrical system issues, including infotainment malfunctions and battery drain, which have been reported at low mileage.

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MethodologyHow we score →

Scores are derived from NHTSA recalls and owner complaints, normalized by vehicle segment averages.

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Quick links for routine service and common repair parts.

  • 5W-30 Synthetic Engine Oil
  • Engine Oil Filter
  • Engine Air Filter
  • Cabin Air Filter
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