The contact owns a 2024 Honda CR-V. The contact stated that his girlfriend was driving at 65 MPH when the collision avoidance activated and stopped 40 feet before reaching the vehicle in front. The driver noticed a vehicle driving at approximately 50 MPH from the rear and attempted to avoid a collision however the vehicle failed to drive and remained at a halt. As a result, the vehicle was involved in a rear-end collision. No warning lights were illuminated. The vehicle was towed to an independent mechanic per the insurance company where it remained and the hatch, body line, hybrid batter, and bumper along with other unknown components needed to be replaced. The vehicle was not repaired and was pending repairs. No air bags deployed. The contact who was a front passenger sustained a herniated disc, the neck, shoulder, spine, and entire back, and urinary tract injuries. The contact's girlfriend who was the driver sustained whiplash, back, neck, concussion, left arm, shoulder, spine, and right ankle injuries. Medical attention was required. A police report was filed. The manufacturer was notified of the failure and 2 claims were opened. The approximate failure mileage was 25,600.