*Median odometer reading when the problem happened, where owners gave one. One complaint can name several problem areas.
Unknown or other
The door sensor on driver side does not operate, when touched does not open or close. However, the door sensor on passenger side works well. Bought car and noticed the defect in one week of ownership, after two months of waiting and diagnosing by dealership, they still were unable to find the solution.
Jul 30, 2026Structure › Body › Door › Handle › Exterior
The contact owns a 2026 Hyundai Ioniq 9. The contact stated that while triggering the front driverâs side exterior door handle sensor, the auto-flush door handle mechanism retracted without anti-pinch detection while the contactâs fingers and the daughter's fingers were positioned between the handle and the door panel on two separate occasions. The dealer was notified of the failure. The failure mileage was approximately 8,000.
Apr 22, 2026 · 8,000 milesUnknown or other
On XXX, I experienced a safety-related problem with a rear door on my 2026 Hyundai IONIQ 9. While the vehicle was parked, I attempted to open the rear door from inside the vehicle, but the door would not open. The child lock was believed to be OFF at the time. I attempted to operate the interior door handle, but the rear door remained locked and could not be opened from inside. This incident was directly witnessed by one of my coworkers, who was present when the problem occurred and can confirm what happened if additional information is required. I am concerned that an occupant could be unable to exit the vehicle in an emergency if this condition occurs again. A rear door that cannot be…
Sep 10, 2026Visibility/wiper
On XXX, while driving my 2026 Hyundai IONIQ 9, the front windshield wiper system completely stopped operating. I activated the windshield washer because the windshield was dirty. Washer fluid sprayed normally onto the windshield, but the front wipers did not move. I then tried AUTO, LOW, and HIGH settings, and none of them worked. This created a safety hazard because washer fluid remained on the windshield and reduced visibility while I was driving. I immediately pulled over and parked in a safe location. I tested the wipers again while parked, but they still did not operate. After arriving at my workplace, I tested them again and they remained inoperative. I recorded a video while the…
Sep 11, 2026Tires
When reaching speeds of approximately 55 to 60 mph, the car would begin to shake and the steering wheel would excessively begin shaking. You did not feel like you had great control of the car. The front two tires required replacing due to the foam being detached/mangled within the tires. The dealership put the new tires onto the back of the car and rotated the original back tires to the front of the car as part of the repair/replacement.
Aug 26, 2026Other/i am not sure
We bought two of these car seats and the base on account we liked the feature that the car seat can rotate in the base... This car seat is UNUSUALLY UPRIGHT on its own and I believe the base insert makes it worse. I am a first time mom and I didn't realize how bad the ergonomics of this car seat are until recently, but my baby absolutely HATES the car now because she associates it with how uncomfortable this car seat is. I cannot stress the emotional distress this car seat has caused me and my baby. Any product like this should not be on the market
Apr 25, 2026Fuel/propulsion system
I am reporting serious repeated safety failures with my 2026 Hyundai IONIQ 9 involving unintended emergency braking and sudden loss of propulsion. While traveling approximately 70â75 mph northbound on I-15, the vehicle suddenly displayed an emergency braking warning and aggressively slowed despite no apparent obstacle or traffic condition requiring emergency braking. Before I could regain control, the vehicle came to a complete stop in active freeway traffic with vehicles around and behind me, creating an extreme risk of a high-speed rear-end collision. Something similar has happened on two other occasions. On a separate occasion while traveling on I-40, the vehicle again unexpectedly…
Aug 4, 2026Fuel/propulsion system
On XXX I had two warnings pop up on the car to check electric vehicle system while driving. The car was still driving fine, so I took it into the dealer (ALM Hyundai in [XXX]) within a few days to have general maintenance and for the DTCs to be reviewed. The EV tech was 2 weeks out, so they just briefly reviewed the code and said it was safe to drive. Everything was fine until XXX. I fully charged the vehicle overnight on XXX. Around 11:30 a.m. on XXX I went to drive the car. This was the 3rd time I had driven it since charging it and was about 2 minutes into the drive when the check electric vehicle system light came on again and the car started losing power and accelerating on its own. It…
Aug 11, 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.
