Potential hydrogen gas leaks have been identified, stemming from faulty sensors or a malfunctioning pressure relief device. This poses a significant safety risk. Estimated repair cost: $500 - $2,000.

Electrical System Faults

Complaints indicate issues within the electrical system, which can affect various vehicle functions. Estimated repair cost: $300 - $1,500.

Forward Collision Avoidance Failure

The automatic emergency braking system has reportedly failed to engage, posing a significant safety risk. Estimated repair cost: $500 - $2,500.

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2021 Hyundai Nexo Maintenance guide

Name: Maintenance dataset for 2021 Hyundai Nexo
Creator: Carfocal

v1.0Updated May 30, 2026Daniel Wilson4 Sources Analyzed4 Critical Recalls

MAINTENANCE SUMMARY

The 2021 Hyundai Nexo, with a combined MPG of 57, presents a unique maintenance profile. Owners should prioritize vigilance regarding its hydrogen fuel system, a key area for reported issues.

View Critical Issue: Engine/Propulsion System Failure

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Reliability Score

Est. Annual Maintenance Cost

$300 - $700

TSBs & Recalls

1 TSBs | 4 Recalls

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Key Takeaways

Prioritize inspection and maintenance of the hydrogen fuel system due to documented leak risks.
Be aware of potential electrical system faults and propulsion system power loss.

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Critical service intervals

Common failure analysis

Symptoms and prevention guidance