The contact owns a 2018 Ford Focus. The contact stated that while driving at an undisclosed speed, the vehicle jerked, and an abnormal sound was coming from the vehicle. The contact stated that the transmission unexpectedly downshifted and the RPM fluctuate. No warning lights were illuminated. The contact stated that the vehicle was driving very slowly. The vehicle was taken to the dealer where it was diagnosed and determined that the transmission and intermittent clutch had failed and needed to be replaced. The vehicle was repaired for the most recent failure. The contact stated that months before the failure, the vehicle experienced transmission failure and the transmission was replaced. The manufacturer was informed of the failure and referred the contact to the NHTSA Hotline to report the failure. The failure mileage was approximately 30,000.