The Positive Crankcase Ventilation (PCV) valve can fail, leading to oil consumption and potential vacuum leaks. Estimated repair cost: $300 - $600.

Ignition Coil Failure

Ignition coils can fail, causing misfires and rough running. Estimated repair cost: $400 - $700.

The electric water pump can develop leaks or fail, leading to overheating. Estimated repair cost: $700 - $1,100.

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2015 Audi A4 Maintenance guide

Name: Maintenance dataset for 2015 Audi A4
Creator: Carfocal

v1.0Updated Jun 2, 2026Ethan Miller4 Sources Analyzed

MAINTENANCE SUMMARY

The 2015 Audi A4, with a combined MPG of 26 and Front-Wheel Drive, presents an excellent reliability record according to NHTSA data, showing no recalls or complaints. However, a high TSB count of 154 suggests attention to potential minor issues.

View Critical Issue: Water Pump Leak

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Reliability Score

Est. Annual Maintenance Cost

$500 - $900

TSBs & Recalls

154 TSBs | 0 Recalls

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Key Takeaways

Excellent safety record with no recalls or complaints reported to NHTSA.
A high volume of Technical Service Bulletins (154) suggests potential for minor, non-safety-critical issues.

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Critical service intervals

Common failure analysis

Symptoms and prevention guidance