The contact owns a 2020 Ford Explorer. The contact stated that upon starting the vehicle, there was an abnormal sound coming from the engine. The contact stated that the failure recurred increasingly. The vehicle was taken to an independent mechanic, where it was diagnosed and determined that the left and right catalytic converters were fractured. The dealer was then notified of the failure and informed the contact that only the left catalytic converter replacement was covered under warranty. The vehicle was not repaired. The manufacturer was notified of the failure, but no assistance was provided. The contact was referred to the NHTSA Hotline to report the failure. The failure mileage was approximately 92,000.