Recalls indicate potential issues with rear axle lock nuts and alignment. This can lead to compromised structural integrity and uneven tire wear over time. Estimated repair cost: $500 - $1,500.

2021 Audi A4 Maintenance guide

Name: Maintenance dataset for 2021 Audi A4
Creator: Carfocal

v1.0Updated Jun 2, 2026Daniel Wilson4 Sources Analyzed

MAINTENANCE SUMMARY

The 2021 Audi A4, with a 'Below Average' reliability verdict, demands diligent maintenance. Focus on ensuring all 46 recalls, particularly those concerning the rear axle lock nuts and seat belt retractors, are addressed.

View Critical Issue: Seat Belt Retractor Malfunction

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Reliability Score

Est. Annual Maintenance Cost

$800 - $1,500

TSBs & Recalls

236 TSBs | 46 Recalls

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Key Takeaways

Prioritize addressing all safety recalls, especially those affecting the rear axle and seat belts.
The 'Below Average' reliability verdict necessitates proactive maintenance and inspection.

2 more takeaways unlock below

Critical service intervals

Common failure analysis

Symptoms and prevention guidance