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What 49 owners told NHTSA about the 2026 Hyundai Tucson Fuel Cell

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 (49)Crash / fire / injury (15)Driver assistance (29)Brakes (14)Electrical system (6)Lane Departure (2)Lights (2)Backup camera & sensors (1)Body & structure (1)Engine (1)Fuel system (1)Speed control (1)

1 of 49 complaints match · Engine · crash/fire/injury only · clear filters

May 7, 2026EngineCrash1 injury

I experienced sudden unintended acceleration which propelled me over a curb, up an embankment, over a boulder and into a fence. I could have been killed or I could have killed others because I had no control of the car. The Hyundai corporation will not acknowledge this. The car was inspected and declared a total loss and is being moved to a location where it can be stored at no cost. There was no warning. Also this exact incident occurred with a Hyundai Kona I owned. That incident occurred on January 8, 2026.

NHTSA ODI 11736293

Working with the data? Download all 49 complaints as CSV · fetched from NHTSA July 25, 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 2026 Hyundai Tucson Fuel Cell verdict →