DC-DC Converter Failure

The DC-DC converter is a critical component for charging the 12V battery and powering various vehicle systems. Failures can lead to a loss of 12V charging, reduced drive power, and failure of exterior lighting. Estimated repair cost: $1,500 - $3,000.

Seat Belt Retractor Malfunction

Recalls have addressed issues with seat belt automatic locking retractors deactivating early. This can prevent proper securing of child restraint systems, posing a safety risk. Estimated repair cost: $300 - $800.

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2021 Land Rover Discovery Maintenance guide

Name: Maintenance dataset for 2021 Land Rover Discovery
Creator: Carfocal

v1.0Updated Jun 11, 2026Daniel Wilson4 Sources Analyzed

MAINTENANCE SUMMARY

The 2021 Land Rover Discovery, with an LLM reliability score of 4.5 and a 'Below Average' verdict, presents a maintenance profile marked by a high number of recalls, particularly concerning electrical systems and seat belts. Owners should prioritize ensuring all recalls are addressed, with special attention to the DC-DC converter and battery ground stud issues.

View Critical Issue: Battery Ground Stud Issue

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Reliability Score

Est. Annual Maintenance Cost

$800 - $1,500

TSBs & Recalls

7 TSBs | 104 Recalls

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Key Takeaways

The 2021 Land Rover Discovery has a 'Below Average' reliability verdict.
Electrical system issues, including DC-DC converter and battery ground stud problems, are significant concerns.

2 more takeaways unlock below

Critical service intervals

Common failure analysis

Symptoms and prevention guidance