Airbag System Malfunction (PODS)

Recalls (21V874000, 19V-547) highlight issues with the passenger occupant detection system (PODS) due to faulty seat heater cables. This can lead to the passenger airbag being disabled, a significant safety concern. Estimated repair cost: $300 - $800.

DSG Transmission Fluid Degradation

The S4's S tronic (DSG) transmission requires regular fluid changes to maintain performance and longevity. Neglecting this service can lead to premature wear and shifting issues. Estimated repair cost: $400 - $700.

CARFOCALvehicle research

2020 Audi S4 Maintenance guide

Name: Maintenance dataset for 2020 Audi S4
Creator: Carfocal

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

MAINTENANCE SUMMARY

The 2020 Audi S4 requires diligent maintenance, with a notable emphasis on addressing potential rear axle lock nut issues and airbag system faults. Regular inspections and adherence to service schedules are crucial for mitigating risks associated with these critical components.

View Critical Issue: Rear Axle Lock Nut Failure

Subscribe to Recall Alerts Subscribe to Recall Alerts

Reliability Score

Est. Annual Maintenance Cost

$1,000 - $1,500

TSBs & Recalls

220 TSBs | 7 Recalls

CarFocal account required

Unlock the Full 2020 Audi S4 Maintenance Guide

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

Key Takeaways

Proactive verification and completion of critical safety recalls related to the rear axle and airbag system are essential.
Regular maintenance of the DSG transmission, including fluid and filter changes, is vital for its longevity.

2 more takeaways unlock below

Critical service intervals

Common failure analysis

Symptoms and prevention guidance