The contact owns a 2024 Hyundai Tucson. The contact stated that while operating the vehicle, the manual speed limit assist erroneously activated causing the vehicle to suddenly decelerate, and the vehicle failed to exceed 20 MPH. The cause of the failure was not yet determined, and the vehicle was not repaired. The manufacturer and local dealer were notified of the failure. The failure mileage was 40,000.

- Conway, AR, USA

Sudden loss of speed for no reason. was traveling at 35 mph when vehicle suddenly dropped to 22 mph. Stepped on gas with no response. I know the 22 mph because it showed up on warning illuminator. Car behind me almost hit me because he had no indication (prior warning). Turned off at closest exit, turned vehicle off then on restart things were normal. Took to dealer and they found nothing in computer code or mechanical to explain why this happened. Am an older women afraid what will happen if repeats on highway going 70+ mph. Please made Hyundia find and fix.

- Neenah, WI, USA

Forward radar sensor pass side lower grill/bumper area. 1st told a sensor recall but after 3 hrs and then seeing the vehicle in the shop with the entire front bumper clip removed the sensor was out of its driver side socket and 1 side flopping around which may have caused a small dimple from the inside to pop out on the 6x5 cover that is the entire lower rubber/plastic black bumper/grill. Told the vehicle was hit, YET no visible damage to bumpers or painted surface can be found by their 2 dealerships and their 1 body shop, + 2 mangers, and 1 independent collision shop.1 manager drove the vehicle 10/11 and stated after "is operating as it should". Warnings have come on again since then refueling at additional 77 mile and then at 92 miles 10/14. Hartford ins has been notified and pending I hope an inspection. Vehicle purchased 1st March 2024, 1st warning at 5336mies currently at 5421 miles. They triggered the service engine light and stated via onboard computer it was an issue with a lower front driver side radiator something that may have been bumped while taking off the front clip, which they chipped and area and left a bit of gap at the fender connection. Other than the small dimple on the plastic from what I believe the sensor had been bouncing against, there is no damage. A safelight windshield company stated there is a notice/recall on the "auto headlight sensor on dash" but they do not cal them, only the optic sensor top center of windshield. BUT per the manual that top sensor plus lower radar can control the forward crash, cruise setup and auto braking. Need some help since my firm works with all auto/tire mfg and conducts DOT tire testing for USA and worldwide independent firms/gov's.

- Uniontown, OH, USA

The contact owns a 2024 Hyundai Tucson. The contact stated that while driving at an undisclosed speed, the vehicle was hesitating during acceleration. While accelerating, the vehicle failed to exceed 3,000 RPM. Thee contact stated that while driving 45 MPH, the vehicle decelerated to 25 MPH independently while depressing the accelerator pedal. The automatic start button remained illuminated. There were no warning lights illuminated. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was approximately 8,800.

- Freedom, PA, USA

While slowly pulling into a parking space at a local shopping center, my 2024 Hyundai Tucson Limited suddenly accelerated while I still had my foot on the brakes to stop. The acceleration was so sudden and intense that I had to swerve to avoid a head on collision with a car parked in front of me. It took me a few seconds to gain control of the car, as the engine was revving at a high acceleration rate and the brakes were not working as they should. Just as suddenly as it happened, it then stopped and I was able to regain control of the car. Had there been other cars in the parking slots nearby, there would have been no to way to avoid a collision.

- Fort Myers Beach, FL, USA

When I need to car to accelerate, sometimes it will, and other times I have to push on the gas pedal all the way to try to accelerate. This is extremely dangerous when pulling out in traffic as I am never sure when the car will be working correctly the car shows no codes that there is something wrong, the mechanics cannot figure out what is causing the lack of acceleration. I can be at a red light and try to accelerate and I would have to push the gas all the way down to even get it going. This is an inter written problem, but very concerning when I am trying to cross traffic as I am never sure what my acceleration is going to be.

- Denver, PA, USA

The forward collision avoidance system made me have accident. I was driving on the expressway, the forward collision made the car stop abruptly, then accelerate. As I was veering to the right, the car stopped again in the middle of the expressway causing me to have an accident. This is unacceptable and very unsafe. This vehicle is not safe to drive with the collision warnings.

- Decatur, GA, USA