The contact owns a 2017 Ford Focus. The contact stated while driving approximately 30 MPH, the transmission hesitated while attempting to shift gear. The failure had occurred on several occasions. The contact stated that the check engine warning light was illuminated. The vehicle was taken back to the residence. The contact self-diagnosed the vehicle but provided no result. The vehicle was repaired; however, the failure persisted. The manufacturer was notified of the failure. The failure mileage was approximately 69,000.