2025 HYUNDAI SANTA FE Engine Problems

Car had an unintended acceleration. I had been stopped prior to entering my garage. I had started to slowly accelerate when the car accelerated hard. It took a lot of effort to stop the car.

Immediately following routine maintenance performed at an authorized Hyundai dealership, my 2025 Hyundai Hybrid Santa Fe Calligraphy experienced a complete loss of engine oil, which resulted in the engine shutting down while driving on a highway. While traveling at highway speed with my minor daughter, the oil pressure and engine warning lights illuminated, followed by multiple error messages. The vehicle rapidly lost power, and I struggled to safely maneuver it onto the shoulder while high-speed traffic was passing. This created an immediate and life-threatening safety situation, with a real risk of being struck by other vehicles. We were stranded on the roadside for over three hours awaiting a tow, exposed to ongoing traffic danger. The dealership later advised that the incident was caused by a faulty Hyundai-supplied part, not driver error, misuse, or lack of maintenance. The vehicle had only approximately 4,000 miles at the time of failure. A sudden...

My 2025 Hyundai Santa Fe Hybrid has recurring powertrain communication failures starting at only 67 miles and continuing at 5,300 and 6,200 miles. Diagnostic trouble codes include U010100 (lost communication with engine control module) and multiple U100xxx codes related to transmission and CAN bus communication failures. These indicate loss of communication between critical control modules. The issue has happened multiple times and remains unresolved. I am concerned this could cause drivability problems, warning lights, or sudden loss of power. This appears to be a system-level defect in the vehicle’s communication network.

Bought this brand new Santa Fe in July 2025 and on day 5 after purchasing this vehicle, car stopped accelerating while driving on highway, which is a serious safety concern. Took the vehicle back to the dealership and turned out the issue is with failed catalytic converter and they had to replace it. Since then, the acceleration has not been that great and had continuous issues with random engine noises etc

Yesterday while I was driving I almost was hit by another car in an intersection. My car did not respond fast enough, the engine did not have any stregth. I found today after I took it for service that it needs a replacement of the oil pump. My car is new it only has 4 months of usage and this type of repairs is done in vehicles with a high mileage. This is very uncommon.

I am reporting a critical safety defect involving my brand-new 2025 Hyundai Santa Fe. While driving on the freeway, the vehicle experienced a complete brake system failure, nearly causing a serious accident. My boyfriend was driving at the time, and when he tried to brake, the vehicle did not stop. He had to take immediate evasive action to avoid crashing, which put both of us — and nearby drivers — in immediate danger. The vehicle was purchased about a month ago and had never been serviced or modified. After the failure, it was towed to Hanlees Auto Mall Hyundai in Richmond, California, where the service department inspected it and confirmed the problem was caused by a missing clamp, which is a critical component of the braking system. This appears to be a manufacturing or dealership oversight. They took photos, documented the issue, and made the repair — but they also...