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2018 Audi A4 Maintenance guide

2018 Audi A4 Maintenance guide
v1.0Updated Jun 2, 2026·Ethan Miller4 Sources Analyzed1 Critical Recalls
MAINTENANCE SUMMARY

The 2018 Audi A4 requires diligent attention due to a significant number of Technical Service Bulletins (TSBs), indicating potential underlying issues. Owners should prioritize ensuring recall 21V874000, concerning the passenger airbag system, is completed.

View Critical Issue: Passenger Occupant Detection System (PODS) Fault
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Reliability Score

8.1/ 10

Est. Annual Maintenance Cost

$500 - $800

TSBs & Recalls

136 TSBs | 2 Recalls

SummaryMaintenance & CostsCommon FailuresSymptoms & PreventionKeep ReadingFAQSources

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Key Takeaways

  • Proactive maintenance is essential given the 136 TSBs.
  • Address the critical airbag system recall (21V874000) promptly.

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Critical service intervals
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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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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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