2025 Hyundai Elantra

My 2026 Hyundai Elantra at 3,300 miles experienced a severe frontal impact with 6g logitudinal deceleration due to uncommanded acceleration and complete brake blindness. Depiste this severe impact, neither airbags nor seatbelt pretensioners deployed. At -2.5 sec. prior to impact, the Forward Collision Avoidance Assist data drops off and goes completely silent. There were no warnings or alerts on the vehicle instrument cluster. This proves catastrophic CAN-bus network crash. Because the network crashes, the engine control unit (ECU) became digitally blind and incapable of registering the driver's physical brake applications. EDR telemetry captured erractic signal cascade from -1 sec to 0 sec impact. The accelerator pedal jumped to 70%, dropped to 0% at -0.5sec and teleported to 100% at 0 sec while the engine RPM increases from 2100 to 2400. No human foot can physically strobe a pedal from 70% to 0% and back to 100% in 0.5 sec while the engine RPM steadily increases. Hyundai deceptively using data generated by a glitched, crashed system to blame driver error and evade product liability. Hyundai even claimed non-deployment of airbag system was "appropriate" at 6g longitudinal deceleration for a frontal impact. Damages to the vehicle was estimated at $10,254.67 by State Farm Ins. Police report confirmed via traffic camera footage that my car stopped at a solid red light behind another vehicle, then it suddenly moved forward, just as the driver described. The driver's foot was phyically on the brake pedal, the engine revved up, the car moved foward on its own and crashed into the vehicle in front despite the brake pedal was depressed throughout the entire episode.

The contact rented a 2025 Hyundai Elantra. The contact stated that while driving 80 MPH with the cruise control activated, the braking system failed to engage, causing the contact to manually depress the brake pedal to stop the vehicle. A dealer was contacted. The vehicle was not taken to a dealer or independent mechanic to be diagnosed or repaired. The failure had occurred three times. The manufacturer was notified of the failure and opened a case. The approximate failure mileage was 10,308.

The “Consider Taking a Break” notification while driving is incredibly loud and distracting even when on the lowest setting and can repeat up to every 20’ while driving. While it is helpful to take a break on extended trips, it is not reasonable to stop that frequently. On long drives, this alert becomes nothing more than an irritant and distraction. There is no option to disable or silence this warning outside of turning off ALL safety notification sounds.I will probably do that just to avoid this notification, which compromises all of the other safety notification sounds that are far more important (ex. Lane departure, forward collision, and blind spot detection).

RE: 2025 HYUNDAI ELANTRA LIMITED AUTOMATIC BRAKE CONTROL On a recent road trip, the automatic brake system activated twice in a manner that could have put our lives at risk. The list below applies to both incidents: On a four lane interstate highway at approximately 70 mph. Wide, level median. Full daylight. Dry pavement. Unlimited visibility. Flat landscape. No objects in the median or anywhere abutting the lanes. No wind. No car for at least a mile ahead of us, none next to us. Brakes were suddenly applied by the “assist.” Brakes so violent we were pushed forward in our seatbelts. Second incident so violent and persistent I started to pull off to the side of the lane for fear of being struck from behind. In both incidents, the “assist” eventually quit. Had this happened with a semi behind us unable to slow down fast enough we could have been severely injured or killed. Apparently, the “assist” cannot be turned off for good. Since the above incidents, we did try to shut off the’”assist" but it was back in operation the next time we started the car. This situation needs to be addressed. The “assist” seemed to want to assist us into an early grave.