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2021 Kia Niro Maintenance guide

v1.0Updated Jun 10, 2026·Daniel Wilson4 Sources Analyzed
MAINTENANCE SUMMARY

The 2021 Kia Niro PHEV requires diligent attention to its transmission's hydraulic clutch actuator, a component linked to a significant recall for fire risk. Regular inspections and adherence to service intervals are crucial for this otherwise reliable vehicle, which boasts an 'Excellent' public reliability score.

Powertrain: Plug-in Hybrid (PHEV)

View Critical Issue: Transmission Hydraulic Clutch Actuator Failure
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Reliability Score

8.5/ 10

Est. Annual Maintenance Cost

$300 - $500

TSBs & Recalls

6 TSBs | 3 Recalls

SummaryMaintenance & CostsCommon FailuresSymptoms & PreventionKeep ReadingFAQSources

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Key Takeaways

  • Prioritize inspection and service of the transmission's hydraulic clutch actuator due to recall history.
  • Adhere to the 7,500-mile oil change and tire rotation schedule.

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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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Quick links for routine service and common repair parts.

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

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