The Positive Crankcase Ventilation (PCV) valve can fail, leading to increased oil consumption, rough idle, and potential vacuum leaks. This is a common issue on many turbocharged Audi engines. Estimated repair cost: $300 - $600.

Leaks can develop from the **water pump**, **thermostat housing**, or **coolant lines**. This can lead to overheating and potential engine damage if not addressed. Estimated repair cost: $400 - $900.

2018 Audi TTS Maintenance guide

Name: Maintenance dataset for 2018 Audi TTS
Creator: Carfocal

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

MAINTENANCE SUMMARY

The 2018 Audi TTS, with 150 Technical Service Bulletins (TSBs), suggests a need for proactive maintenance to address potential minor issues. While no recalls or complaints are reported, owners should focus on regular fluid changes and inspections, particularly for the engine and transmission, to ensure optimal performance and longevity.

View Critical Issue: DSG/S Tronic Transmission Issues

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Reliability Score

Est. Annual Maintenance Cost

$600 - $1,000

TSBs & Recalls

150 TSBs | 0 Recalls

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Key Takeaways

The 2018 Audi TTS has a strong reliability record with no reported recalls or consumer complaints.
A significant number of Technical Service Bulletins (TSBs) indicate potential for minor issues requiring attention.

3 more takeaways unlock below

Critical service intervals

Common failure analysis

Symptoms and prevention guidance