2025 Hyundai Ioniq 5

I have had my new car only two weeks and have driven only 500 miles. Yesterday, while driving on a freeway at constant 65 mph speed, I suddenly experienced COMPLETE POWER FAILURE. I coasted across three lanes of heavy traffic and came to a stop on the shoulder. There were no warning lights on the dashboard. I turned the car off, turned it on again, and the car drove normally. I checked on my Hyundai app and it said under Vehicle Health that all systems were normal. I called the Santa Monica Hyundai service center and was advised to drive home to Santa Barbara (on the freeway) and get in touch if the problem recurred. I drove my car some 50 miles to Santa Monica to be evaluated and the service rep said that all makes of EVs have this problem, not unusual. After some hours, I spoke to the shop foreman who said he had never seen this problem, that the diagnostics had shown no problem, that there was no indication that this had indeed happened, that he could do nothing further unless there was proof that I had experienced complete power failure, and that if it happened again I should obtain proof by videoing the dashboard and my foot pressing down on the accelerator without any response. I called the Oxnard Hyundai dealer where I had purchased the car and was advised to bring my car there for a second opinion. I drove the 60 miles to their service center. I was told by the service rep that he had never heard of this problem. I was given a loaner car to drive the 40 miles home and my Ioniq 5 was kept for evaluation. I discovered on Google that sudden power failures in Ioniq 5's are a known problem by both Hyundai and the NHTSA and that there have been recalls as a result. It seems reprehensible that Hyundai representatives in two different dealerships claimed that they had never heard of this phenomenon. I was at risk of a potentially deadly accident by losing power on a freeway. I am lucky to be alive.

You cannot wear dark sunglasses while driving this car, as the safety systems are turned off because the car fails to recognize your eyes, as it can't see them through the sunglasses. How does the research and development side of making this ioniq 5 not see this? This ultimately forces you to drive without sunglasses, causing an unsafe environment while driving. This is a bad design for the car.

Car constantly gives false alarm that driver is not looking at road. It’s particularly bad with sunglasses or even normal glasses, but false alarms are common even without glasses in strong sunlight. It’s a serious safety issue because the car constantly beeps false warnings and threatens to disable driving assistance. Internet forums are full of users reporting same issue, this component is defective.

The vehicle was charging to 100% and once it reached 81%, jumped to 100% and stopped charging. Two days later, the vehicle populated an error “Battery Management System”. The vehicle was checked in to a dealer and it was confirmed that there was a faulty cell, and the high voltage battery must be replaced. It was confirmed that if I were to keep driving, the battery reading could drop at any point to 5% or lower, and continue to fluctuate causing a concern for safety with potentially losing all power.

Our 2025 Hyundai Ioniq 5 has been sitting unrepaired for almost five months due to a complete lack of availability of an essential replacement part (front bumper lower molding part number 86569PI000). The car was involved in a minor collision on [XXX], and although no one was hurt and the airbags did not deploy, the vehicle has remained unrepairable and inoperable. The car sensors can not be calibrated without this part, thus affecting all front sensors of the vehicle. Both the Hyundai-certified repair facility and our insurance company have confirmed that the necessary part is on national backorder with no estimated date of arrival, despite extensive efforts to source it — including looking on eBay and through nationwide networks. This was also confirmed by Hyundai Customer Support with whom we opened case [XXX]. The part involved is necessary for proper calibration of front sensors of the vehicle. We are continuing to pay on the lease while the car sits undriveable and depreciating. This has placed a major financial burden on us and raises broader safety concerns. Hyundai is apparently unable or unwilling to supply parts for its current-year models, which may compromise the safe restoration of structurally- or electronically-damaged vehicles. We respectfully request that NHTSA investigate Hyundai’s inability to supply safety-critical parts for its 2025 models, and determine whether this systemic delay poses a risk to consumers and undermines post-collision safety standards. The repair shop is Advanced Collision Repair in Escondido, CA, 760-741-7565. The shop’s manager is John McLure. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

1. The Integrated Charging Control Unit (ICCU) and associated high-voltage harness/fuse appear to have failed. According to the dealership, both the ICCU harness and a high-voltage fuse are being replaced. The vehicle is still at the dealer for repairs and can be made available for inspection upon request. 2. While merging onto a freeway on-ramp after charging at a Tesla Supercharger in Barstow, California, the vehicle suddenly stalled, losing all propulsion power. This occurred in live traffic while attempting to accelerate, putting me at significant risk of a collision. I was forced to stop the vehicle on the on-ramp and eventually had to call a tow truck. The situation was hazardous, as there was no shoulder to safely exit the vehicle and other vehicles were traveling at high speeds. 3. Yes. The issue was confirmed by the authorized Hyundai dealership where the vehicle was towed. The dealership stated that the ICCU harness and a high-voltage fuse are being replaced under warranty. However, they have also indicated that the required parts are backordered, and no ETA has been provided. 4. The vehicle has been inspected by a Hyundai dealership technician, and Hyundai Motor America is involved in the case. It has not been inspected by police or insurance representatives. Hyundai Customer Care has acknowledged the issue and is in contact with me, but a resolution has not yet been reached. 5. Yes. Approximately 5 to 10 seconds after finishing DC fast charging at the Barstow Tesla Supercharger, the vehicle displayed a brief warning message related to the charging system. Unfortunately, the warning disappeared quickly before I could take a photo or read it in full. Immediately after, as I attempted to enter the freeway on-ramp, the vehicle stalled.

With Adaptive Cruise control and Lane Keeping Assist on, no matter how attentive I am, within a couple minutes (give or take) I get Driver Attention warnings. These warnings are distracting and require manual intervention in traffic. I can stop them either by turning cruise control on and off, or by accelerating manually, which can be dangerous and/or inconvenient. I do sit high in the seat, as I have a long back. I wear no glasses. I have normal wide open eyes. I am keeping my hands at 10-2 orientation. I am sitting in a way that gives me clear unobstructed view of the eye tracking camera at all times. I have not had this confirmed. I understand it is a known problem.