The contact owns a 2024 Mazda CX-50. The contact stated that while opening the doors, the door stop detent had failed, causing the door to rapidly close and swing back, and making contact with the occupants. Both the contact and the wife sustained leg bruises, and the wife sustained a head contusion due to the failure. No medical treatment was required. The contact indicated that the failure was present on both the driver's side front and rear doors and the passenger side front and rear doors. The cause of the failure was not determined. The vehicle was taken to the local dealer, who examined the vehicle, and no failure was found. The contact was informed that the door operated as intended. The manufacturer was notified of the failure, but no assistance was offered. The failure mileage was 100.