Wheel Bolts problems of the 2016 Subaru Forester

The contact owns a 2016 Subaru Forester. The contact stated that the vehicle was taken to an independent mechanic on four separate occasions to rotate the tires; and each time the contact was notified that one lug bolt on each wheel had fractured. The contact was notified that excessive force was needed to remove the bolts and that the mechanic was not responsible for any damages caused while removing each wheel. The dealer was notified of the failure and informed the contact that they were unaware of the failure. The manufacturer was not notified of the failure. The vehicle was not repaired. The failure mileage was approximately 50,000.