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2021 Land Rover Defender Maintenance guide

v1.0Updated Jun 11, 2026·Ethan Miller4 Sources Analyzed3 Critical Recalls
MAINTENANCE SUMMARY

The 2021 Land Rover Defender requires diligent maintenance, with a notable focus on addressing potential engine cam carrier oil leaks and DC-DC converter failures. Regular inspections and adherence to service schedules are critical for mitigating these risks.

View Critical Issue: Engine Cam Carrier Oil Leak
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Reliability Score

6.0/ 10

Est. Annual Maintenance Cost

$400 - $700

TSBs & Recalls

8 TSBs | 133 Recalls

SummaryMaintenance & CostsCommon FailuresSymptoms & PreventionKeep ReadingFAQSources

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Key Takeaways

  • Proactive maintenance is essential due to a 'Below Average' reliability rating.
  • Address potential engine cam carrier oil leaks and DC-DC converter failures as top priorities.

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Critical service intervals
Common failure analysis
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MethodologyHow we score →

Scores are derived from NHTSA recalls and owner complaints, normalized by vehicle segment averages.

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Shop Parts

Quick links for routine service and common repair parts.

  • 5W-30 Synthetic Oil
  • Oil Filter
  • Synthetic Engine Oil
  • Cabin Air Filter
  • Brake Fluid

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