AI-generated · grounded in NHTSA data
Reliability & 5-year cost of ownership — 2021 Hyundai Nexo
Overall rating NHTSA-grounded
Below average
Estimated 5-year repair + maintenance cost: $6,000–$9,000
The 2021 Hyundai NEXO faces significant safety recalls for potential hydrogen leaks, posing fire risks. Complaints highlight electrical issues, but are less frequent than fuel-related concerns.
Most-common failures
| Part | Typical mileage | Cost range | Frequency |
|---|---|---|---|
| hydrogen gas sensors | 30,000–60,000 miles | $600–$800 | common |
| pressure relief devices | 20,000–50,000 miles | $1,000–$1,200 | common |
| forward collision system | 30,000–60,000 miles | $400–$600 | occasional |
Scheduled maintenance to budget
Routine items every owner should plan for.
- regular hydrogen tank inspection
- annual electrical system check
- coolant flush every 2 years
- brake fluid replacement biennially
- cabin air filter replacement annually
Warning signs to watch for
Symptoms that signal a major upcoming repair.
- unexpected drop in mileage
- check engine light with odor
- frequent hydrogen sensor alerts
- increase in braking distances
Generated by gpt-4o on 8/20/2026. Cost ranges are conservative estimates that account for typical regional variation.