Rear Axle Lock Nut Failure

Potential failure of rear axle lock nuts due to stress corrosion, which can affect rear-wheel alignment and stability. This is addressed by safety recalls. Estimated repair cost: $500 - $1,500.

Gateway Control Module (GCM) Water Ingress

Liquid ingress into the GCM can cause intermittent or complete vehicle shutdown. Recalls address this with protective measures. Estimated repair cost: $500 - $1,200.

High-Voltage Battery Overheating (PHEV Models)

Potential for high-voltage battery overheating, particularly concerning for plug-in hybrid models. Recalls are in place to address software and hardware. Estimated repair cost: $3,000 - $8,000+.

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2021 Audi Q5 Maintenance guide

Name: Maintenance dataset for 2021 Audi Q5
Creator: Carfocal

v1.0Updated Jun 2, 2026Daniel Wilson4 Sources Analyzed2 Critical Recalls

MAINTENANCE SUMMARY

The 2021 Audi Q5 requires diligent maintenance, particularly concerning potential engine connecting rod bearing failures, which can be catastrophic. Regular inspections and adherence to service schedules are crucial.

View Critical Issue: Engine Connecting Rod Bearing Failure

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Reliability Score

Est. Annual Maintenance Cost

$400 - $700

TSBs & Recalls

235 TSBs | 52 Recalls

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

Key Takeaways

Proactive maintenance is essential due to potential critical engine failures.
Address all safety recalls promptly, particularly those affecting the engine and rear axle.

3 more takeaways unlock below

Critical service intervals

Common failure analysis

Symptoms and prevention guidance

2021 Audi Q5 Maintenance guide

v1.0Updated Jun 2, 2026Daniel Wilson4 Sources Analyzed2 Critical Recalls

MAINTENANCE SUMMARY

View Critical Issue: Engine Connecting Rod Bearing Failure

Subscribe to Recall Alerts Subscribe to Recall Alerts

Reliability Score

Est. Annual Maintenance Cost

$400 - $700

TSBs & Recalls

235 TSBs | 52 Recalls

CarFocal account required

Unlock the Full 2021 Audi Q5 Maintenance Guide

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

Key Takeaways

Proactive maintenance is essential due to potential critical engine failures.
Address all safety recalls promptly, particularly those affecting the engine and rear axle.

3 more takeaways unlock below

Critical service intervals

Common failure analysis

Symptoms and prevention guidance