Supercharger Belt Failure

The belt driving the supercharger can wear out or fail, leading to a loss of boost and significantly reduced engine power. This is a critical component for the S4's performance. Estimated repair cost: $300 - $600.

PCV System Malfunction

The Positive Crankcase Ventilation (PCV) system can fail, leading to increased oil consumption, rough idling, and potential vacuum leaks. This is a common issue on many Audi models of this era. Estimated repair cost: $400 - $800.

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2013 Audi S4 Maintenance guide

Name: Maintenance dataset for 2013 Audi S4
Creator: Carfocal

v1.0Updated May 23, 2026Ryan Davis4 Sources Analyzed1 Critical Recalls

MAINTENANCE SUMMARY

The 2013 Audi S4 demands diligent maintenance due to a high volume of Technical Service Bulletins (TSBs) suggesting potential systemic issues. Prioritize inspecting the airbag control module software for the critical recall and be aware of potential electronic control unit (ECU) related problems.

View Critical Issue: Oil Leaks (Valve Cover Gaskets, Oil Cooler Seals)

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Reliability Score

Est. Annual Maintenance Cost

$700 - $1,200

TSBs & Recalls

503 TSBs | 1 Recalls

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Key Takeaways

Proactive maintenance is crucial due to a high volume of Technical Service Bulletins (TSBs).
Address potential oil leaks from valve cover gaskets and oil cooler seals promptly.

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Critical service intervals

Common failure analysis

Symptoms and prevention guidance