The contact owns a 2018 Ford Focus. The contact stated while driving 14 MPH, the accelerator pedal was depressed; however, the vehicle failed to accelerate as intended, and the transmission was slipping while shifting between first and second gear. No warning light was illuminated. The vehicle was taken to an independent mechanic; however, no cause of the failure was found. The vehicle was not repaired. The contact stated that on another occasion while driving 10 MPH, the vehicle jerked, the transmission unexpectedly downshifted, with the power train and check engine warning lights illuminated. The contact was able to pull over to the side of the road. The vehicle was able to restart; however, the transmission failed to operate as intended. The vehicle was towed to the residence and had not been driven since the failure. The manufacturer was made aware of the failure. The failure mileage was approximately 111,000.