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2015 Audi S4 Maintenance guide

v1.0Updated Jun 2, 2026·Ryan Davis4 Sources Analyzed1 Critical Recalls
MAINTENANCE SUMMARY

The 2015 Audi S4 presents an average reliability picture, marked by a significant number of Technical Service Bulletins (TSBs) and one critical safety recall concerning the airbag system. Owners should prioritize verifying the airbag recall completion and be aware of potential issues related to the high TSB volume, which suggests a need for proactive inspection across various systems.

View Critical Issue: Oil Leaks (Valve Covers, Oil Cooler)
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Reliability Score

8.1/ 10

Est. Annual Maintenance Cost

$600 - $1,000

TSBs & Recalls

344 TSBs | 1 Recalls

SummaryMaintenance & CostsCommon FailuresSymptoms & PreventionKeep ReadingFAQSources

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Key Takeaways

  • Proactive maintenance is key due to a high TSB count.
  • Verify completion of the airbag system recall.

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MethodologyHow we score →

Scores are derived from NHTSA recalls and owner complaints, normalized by vehicle segment averages.

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Full ownership breakdown for the 2015 Audi S4.

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Shop Parts

Quick links for routine service and common repair parts.

  • 5W-40 Synthetic Oil
  • Oil Filter
  • Synthetic Engine Oil
  • Cabin Air Filter
  • Engine Air Filter

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