The contact owns a 2019 Lincoln Nautilus. While the contact’s father was driving approximately 25-40 MPH, the accelerator pedal was depressed; however, the vehicle failed to accelerate as intended. Additionally, the contact stated that the transmission shifted hard, and the vehicle shuddered and jerked abnormally while driving. The contact stated the failure had occurred while her father was driving at a slow speed. The contact referenced an unknown recall; however, the VIN was not associated with the recall. The vehicle was not diagnosed or repaired by an independent mechanic or the dealer. The manufacturer was not made aware of the failure. The failure mileage was unknown.