Rear Axle Lock Nut Failure

Recalls indicate potential issues with rear axle lock nuts, which could lead to alignment problems or uneven tire wear if not addressed. This is a safety-critical component impacting suspension integrity. Estimated repair cost: $500 - $1,000.

Instrument Panel Display Failure

Software-related recalls have targeted instrument panel display failures. Issues can range from flickering to complete shutdown, impacting driver information. Estimated repair cost: $300 - $700.

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2021 Audi S6 Maintenance guide

Name: Maintenance dataset for 2021 Audi S6
Creator: Carfocal

v1.0Updated Jun 2, 2026Daniel Wilson4 Sources Analyzed5 Critical Recalls

MAINTENANCE SUMMARY

The 2021 Audi S6 presents an average reliability profile, with a high number of recalls (57) and TSBs (244) suggesting proactive manufacturer attention to potential issues. Owners should prioritize inspections related to safety systems, particularly airbags and seat belts, and monitor for potential rear suspension or alignment concerns.

View Critical Issue: Airbag System Malfunction

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Reliability Score

Est. Annual Maintenance Cost

$1,200 - $2,000

TSBs & Recalls

244 TSBs | 57 Recalls

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Key Takeaways

The 2021 Audi S6 requires diligent maintenance due to its complex powertrain and advanced systems.
A high volume of recalls and TSBs suggests potential for early-life issues that warrant proactive attention.

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Critical service intervals

Common failure analysis

Symptoms and prevention guidance