Pre-purchase inspection checklist — 2020 Hyundai Nexo
The 2020 Hyundai Nexo has notable recalls concerning hydrogen gas-related issues and braking system failures. It's essential to comprehensively inspect these areas before purchasing due to potential safety hazards. The recalls are serious, especially involving the hydrogen gas system that could lead to leaks and fire risks if not addressed.
Known issues to inspect
Hydrogen gas leak
How to check: Inspect fuel tank assembly and pressure relief devices for damage.
Hydrogen gas detection failure
How to check: Verify operation of gas detection sensors through diagnostic check.
Braking performance reduction
How to check: Test brakes for response and abnormal sensor signals.
RSPA system malfunction
How to check: Test Remote Smart Parking Assist for proper function.
Test-drive walkthrough
- 01
Cold start
What to check: Listen for unusual sounds from fuel system.
Red flag: Hissing or gas smell detected
- 02
First minute idling
What to check: Observe for warning lights on dashboard.
Red flag: Hydrogen leak or brake warning lights
- 03
City driving
What to check: Check brakes for consistent response.
Red flag: Delay or failure in braking
- 04
Parking maneuvers
What to check: Test RSPA for smooth operation.
Red flag: System fails to park or malfunction
- 05
Highway driving
What to check: Verify fuel efficiency and gauge stability.
Red flag: Fluctuating fuel gauge or reduced mileage
Questions for the seller
Use this exact phrasing.
- Has the hydrogen tank assembly been inspected?
- Are there any pending recall repairs?
- Has the brake system been reprogrammed?
- Is the hydrogen detection system functional?
- Any issues with Remote Parking Assist?
Documents to request
Don't sign anything until you have these.
- Recall repair records
- Service history
- Title and registration
- Warranty documentation
Generated by gpt-4o on 6/5/2026. Grounded in the NHTSA recall corpus and owner-complaint patterns for the 2020 Hyundai Nexo.