*Median odometer reading when the problem happened, where owners gave one. One complaint can name several problem areas.
Unknown or other
My 2023 Ioniq 6 is not charging as it has for 3 years. When charging to 100% my app States 347 and 382 miles. It should be 361 as stated by Hyundai. What happens if I drive under 45 mph after 5 miles the miles goes down to 303. It is not working as stated. It is not holding miles properly.
May 20, 2026Power train
The shift-by-wire system failed while the vehicle was being parked. The vehicle would not shift out of Drive; repeated attempts to engage Park resulted in Neutral only, with a "PARK malfunction. Engage parking brake when parking vehicle." warning displayed in the instrument cluster. Because this vehicle requires Park to be engaged before it can be powered off, the vehicle also could not be turned off. I was trapped with an energized vehicle that could not be secured in Park or shut down for approximately 30 minutes. A red 12-volt battery warning lamp was illuminated in the instrument cluster during the event (photo attached showing the malfunction message, Neutral gear state, and battery…
May 9, 2026Power train
While driving on the highway, there was a complete loss of power and steering. I was able to navigate to the side of the road. The vehicle would not start on multiple occasions, and no warning lights illuminated. The vehicle was taken to the dealer, where it was stated that the issue could not be duplicated. The vehicle was not repaired. The manufacturer was not notified of the issue. The approximate failure mileage was 18,000.
May 15, 2024 · 18,000 milesElectrical system
In November of 2025 the vehicle displayed a "Check Eletrical System" error message. Shortly thereafter the vehicle decelerated to under 10mph as we were turning into traffic. We were able to drive it home (less than 1mi away) and then called the Dealership. The car was then towed to the dealer (but needed a jump as the 12v battery had drained). The dealer diagnosed a failure of the ICCU and replaced it. The vehicle was in the shop for approximately 2 weeks. More recently, on May 3rd of 2026, the vehicle experienced a complete deceleration as it was traveling through an intersection. No error lights or warning messages were displayed. I was only able to partially clear the intersection…
May 3, 2026Engine
I was pulling into a parking spot and my vehicle suddenly lurch forward, and I had to slam on the brakes quickly, scraping the front of the curb. I checked there was no warning lights. I checked the floor mat, and this was not impeding the accelerator pedal I am certainly I did not accidentally hit the accelerator instead of the brake.
Apr 19, 2026Electrical system
On March 19, 2026 my Hyundai Ioniq 6 broke. It was clearly the ICCU problem. The car went into turtle mode with a maximum speed of 22 miles an hour and told me to get to a safe area , stop the car and have it brought in. It was brought to my local Hyundai dealer and a few days later they confirmed it was the ICCU problem. This is a safety issue. Fortunately I was 1 mile from my house and did not get stranded. Hyundai has had four years to fix the problem and obviously they have not done so. The car was a 2023 with about 23,000 miles on it.
Mar 19, 2026Electrical system
I WAS DRIVING AND MY ELECTRICAL WARNING LIGHT CAME ON AGAIN FOR THE SECOND TIME IN A YEAR. I WAS TOLD IT WAS THE ICCU LAST YEAR AND THEY SAID IT WAS FIXED AND WOULDNT HAVE A PROBLEM AGAIN. I HAD TO RENT A CAR FOR ALMOST TWO MONTHS. THE SAME PROBLEM AGAIN WITH THE ICCU HAPPENED ABOUT A MONTH AGO AND THEY STILL HAVE MY CAR. IN A ANOTHER GAS RENTAL CAR.
Mar 16, 2026Fuel/propulsion system
The fuel door/charge door would not open. Conditions were such that I was safe and had sufficient range without charging, but were I farther from home this could have left me stranded. The problem has not been confirmed by a dealer, other service center, manufacturer, police, or insurance representative, though a friend was not able to open it either/confirmed the issue was not "user error". There were no warnings. The incident occurred after rain in the prior evening, followed by below freezing temperatures. The fuel/plug door opened in the afternoon when temperatures were warmer.
Mar 27, 2026
Owner complaints are submitted to NHTSA by the public and are not verified. Shown as filed (NHTSA removes personal details); long reports are shortened.
