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What 1 owners told NHTSA about the 2020 Hyundai Ioniq

These are the actual owner complaints behind this car’s reliability verdict, filed with the federal government, unedited. They’re unverified reports, not confirmed defects: read them as leads for your pre-purchase inspection, not a diagnosis.

All (1)Electrical system (1)

1 of 1 complaints match · Electrical system · clear filters

Apr 4, 2025Electrical system

The contact owns a 2020 Hyundai Ioniq. The contact stated that while driving at undisclosed speeds, the vehicle stalled. No warning lights were illuminated. The contact was able to restart the vehicle. The vehicle was taken to the dealer where it was diagnosed and determined that the battery had overheated. The vehicle was not repaired. The contact stated that on a separate occasion, while driving at undisclosed speeds, the vehicle stalled. No warning lights were illuminated. The vehicle was taken back to the dealer; however, no cause for the failure was found. The contact stated that on the way home, there was an abnormal ticking sound was coming from the vehicle. The contact stated that the electrical system on the vehicle had failed, and the doors and the trunk failed to open. No warning lights were illuminated. The vehicle was taken to the dealer; however, the contact was unsure if the vehicle was repaired. The vehicle remained at the dealer and had not been driven since the failure. The manufacturer was notified of the failure. The failure mileage was approximately 22,400.

NHTSA ODI 11652755

Working with the data? Download all 1 complaints as CSV · fetched from NHTSA July 19, 2026

How to use these: a complaint is one owner’s report, filed voluntarily and published unverified. Patterns matter more than any single story. If several owners describe the same failure at similar mileage, put that system at the top of your pre-purchase inspection list. Back to the full 2020 Hyundai Ioniq verdict →