Spontaneous Windshield Cracks

Owners report windshields cracking without apparent impact, potentially affecting visibility and safety systems. This is a common issue that requires regular inspection. Estimated repair cost: $400 - $800.

Electrical System Issues

Complaints include infotainment system failures, battery drain, and intermittent system shutdowns, sometimes occurring at low mileage. These point to potential wiring or module defects. Estimated repair cost: $200 - $1,500+.

Forward Collision Avoidance System Warnings

Some owners report issues with the Forward Collision Avoidance system, including unnecessary warnings or unintended braking. This can be a nuisance and impact driver confidence. Estimated repair cost: $150 - $500.

CARFOCALvehicle research

2021 Subaru Legacy Maintenance guide

Name: Maintenance dataset for 2021 Subaru Legacy
Creator: Carfocal

v1.0Updated May 30, 2026Daniel 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

Subscribe to Recall Alerts Subscribe to Recall Alerts

Reliability Score

Est. Annual Maintenance Cost

$300 - $500

TSBs & Recalls

76 TSBs | 5 Recalls

CarFocal account required

Unlock the Full 2021 Subaru Legacy Maintenance Guide

Create a free account to reveal the full service schedule, repair costs, and deeper diagnostic data.

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.

3 more takeaways unlock below

Critical service intervals

Common failure analysis

Symptoms and prevention guidance