The Positive Crankcase Ventilation (PCV) system can fail, leading to increased oil consumption, rough idling, and potential vacuum leaks. Estimated repair cost: $300 - $800.

Ignition Coil Failure

Individual ignition coils can fail, leading to misfires, rough running, and reduced engine performance. Estimated repair cost: $400 - $800.

The turbocharger can develop issues such as oil leaks, wastegate problems, or bearing failure, impacting performance and potentially causing engine damage. Estimated repair cost: $1,200 - $2,500.

CARFOCALvehicle research

2012 Audi A4 Maintenance guide

Name: Maintenance dataset for 2012 Audi A4
Creator: Carfocal

v1.0Updated May 23, 2026Ryan Davis4 Sources Analyzed

MAINTENANCE SUMMARY

The 2012 Audi A4, with 177 TSBs, indicates a history of non-safety-critical issues. Owners should prioritize regular maintenance, especially fluid changes, and be aware of potential engine oil consumption and PCV system failures.

View Critical Issue: Turbocharger Issues

Subscribe to Recall Alerts Subscribe to Recall Alerts

Reliability Score

Est. Annual Maintenance Cost

$400 - $800

TSBs & Recalls

177 TSBs | 0 Recalls

CarFocal account required

Unlock the Full 2012 Audi A4 Maintenance Guide

Create a free account to reveal the full service schedule, repair costs, and deeper diagnostic data.

Key Takeaways

The 2012 Audi A4 has a 'Below Average' reliability verdict, largely due to a high volume of Technical Service Bulletins (TSBs).
Common issues include engine oil consumption, PCV system failures, and potential ignition coil problems.

3 more takeaways unlock below

Critical service intervals

Common failure analysis

Symptoms and prevention guidance