2025 CHEVROLET EQUINOX — FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL

I was driving my 2025 Chevrolet Equinox EV on the highway with Adaptive Cruise Control (ACC) engaged. The vehicle was also set to "One-Pedal Driving" (High regenerative braking). The vehicle in front of me slowed down abruptly. My vehicle's ACC began to slow the car, but it was not decelerating quickly enough to avoid a collision. I immediately intervened by pressing the brake pedal as hard as I could, pushing it completely to the floor. Critical Safety Failure: The vehicle's physical brakes failed to engage. Despite my foot being pressed hard to the floor, the vehicle did not slow down. It felt as though only the regenerative braking was (slowly) working and that my manual brake application had zero effect. The vehicle continued to glide forward with no significant braking power, and I was unable to stop the car in time, resulting in a collision with the rear of the vehicle ahead. Summary of Defect: The primary safety failure was the complete lack of response from the manual brake pedal. My attempt to override the vehicle's automated systems in an emergency was unsuccessful, as the brake pedal was unresponsive. Reporting History: I have already reported this incident to my auto insurance, my local Chevrolet dealership, and the Chevrolet Customer Assistance Center. A representative from Chevrolet recommended that I file this report with the NHTSA to help identify and track similar safety-critical incidents.