The contact owns a 2018 Ford Focus. The contact stated that the vehicle failed to shift to reverse(R) as needed. The contact stated that the transmission warning light was illuminated. The contact stated that when the gear shifter was shifted to drive(D), the transmission downshifted unintendedly. The vehicle was towed to a dealer where it was diagnosed and determined that the transmission had failed and needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was 134,225.