Frame Rust problems of the 2008 Mercedes Benz C300

The contact owns a 2008 Mercedes Benz C300. The contact stated that while driving at undisclosed speeds, the rear of the vehicle rattled and vibrated abnormally. The vehicle was taken to mercedes-benz of fort mitchell (2100 dixie hwy, fort mitchell, ky 41011) who diagnosed that the rear driver's side sub frame was rusted. The subframe was replaced and the failure was remedied. The manufacturer was notified of the failure. The failure mileage was 250,000.