Subaru Legacy 2021 Common Faults
Every figure below comes from owner-submitted fault reports for this exact model — not a manufacturer spec sheet. Jump to any section, or scroll through for the full picture before buying or diagnosing a problem.
📊 Subaru Legacy Data Score
📐 The MyCarFault Score blends this model's resolution rate (% of reports with a confirmed fix) and severity mix of its 4 reported cases. It reflects our database only, not a manufacturer or third-party rating — treat it as indicative until more reports come in.
📋 Most Reported Problems
🗂️ Problem Categories
Which vehicle systems generate the most reports for the Subaru Legacy, based on all 4 cases on this page.
🛠️ Low maintenance complexity — issues span 1 different system. Models touching fewer systems are generally simpler and cheaper to keep on top of.
Subaru Legacy drivers have shared 4 fault reports, covering problems such as Subaru Legacy 2021 Check engine light P0171 lean mixture, Subaru Legacy 2021 Coolant leak from engine area, Subaru Legacy 2021 P0300 random misfire rough idle and Subaru Legacy 2021 Engine overheating temperature gauge high.
📋 Subaru Legacy 2021 Overview
The Subaru Legacy 2021 has 4 owner-reported faults recorded on MyCarFault. Documented issues include Subaru Legacy 2021 Check engine light P0171 lean mixture, Subaru Legacy 2021 Coolant leak from engine area, Subaru Legacy 2021 P0300 random misfire rough idle, and Subaru Legacy 2021 Engine overheating temperature gauge high.
100% of reported issues have a confirmed driver-verified fix.
Long-term Subaru Legacy ownership appears manageable based on community data. A high proportion of reported faults have confirmed fixes, suggesting problems are diagnosable and repairable by informed owners and independent garages.
🔍 Reliability Snapshot
💡 Should You Buy a Used Subaru Legacy?
Thinking about buying a used Subaru Legacy? Here is what our fault data suggests.
With 4 reported faults in our database, the Subaru Legacy has a relatively small fault footprint. This could mean it is genuinely reliable, or simply that fewer owners have submitted reports. Either way, the known issues are documented on this page.
The most reported issue is "Subaru Legacy 2021 Check engine light P0171 lean mixture". Ask the seller specifically about this before committing to a purchase, and have an independent mechanic check for it during a pre-purchase inspection.
An independent pre-purchase inspection (PPI) is strongly recommended regardless of the seller's assurances or the car's service history.
❓ Common Questions About the Subaru Legacy
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Is the Subaru Legacy reliable?
The Subaru Legacy has 4 owner-reported faults on MyCarFault, with 100% having a confirmed fix. Reliability varies by year and engine. Browse individual fault pages for detailed breakdowns.
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What is the most common Subaru Legacy problem?
The most frequently reported Subaru Legacy issue on MyCarFault is: Subaru Legacy 2021 Check engine light P0171 lean mixture. Click the fault title above for full symptoms, owner fixes, and estimated repair costs.
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Is the Subaru Legacy expensive to repair?
Repair cost data for the Subaru Legacy is still being gathered. Browse individual fault pages for owner-reported repair estimates.
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Should I buy a used Subaru Legacy?
A used Subaru Legacy can be a solid choice with proper due diligence. Review the fault list on this page, check the specific car's service history, and arrange an independent pre-purchase inspection before buying.
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Which Subaru Legacy faults should I check before buying?
Before buying a Subaru Legacy, specifically ask about and inspect for: Subaru Legacy 2021 Check engine light P0171 lean mixture; Subaru Legacy 2021 Coolant leak from engine area; Subaru Legacy 2021 P0300 random misfire rough idle. These are the most reported issues in our database.
🔧 Reported Faults
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