Rubuta ci gaba don wannan sakin layi - A watan Maris na 2021, Williams ya gabatar da FW43B, wanda aka tsara don yin gasa a kakar 2021. Motar ta fara shakedown a watan Fabrairun 2021 a Silverstone tare da George Russell da Nicholas Latifi a bayan motar. Roy Nissany ya tuka motar a cikin kwanaki biyu na farko na gwajin kakar wasa. Ya kuma tuka motar a lokacin atisayen farko na Gasar Grand Prix ta Spain ta 2021. Asali, za a gabatar da motar a cikin aikace-aikacen wayar hannu ta AR ta musamman inda magoya baya za su iya ganin motar a teburin su ko gareji, amma kafin ƙaddamarwa, an yi kutse a cikin aikace-aikacen. Don haka, Williams ya yanke shawarar soke aikace-aikacen. Kayan motar ya girmama nasarar da Williams ta samu, da kuma Sir Frank Williams, wanda ya kafa kungiyar, amma ya bar ta bayan Gasar Italiya ta 2020. FW43B ita ce mota ta farko da za ta fafata a cikin cikakken kakar ba tare da dangin Williams suna kula da ƙungiyar ba. Motar ta fara fitowa a gasar Bahrain Grand Prix. A gasar Emilia Romagna Grand Prix
, duka Latifi da Russell sun yi ritaya, bayan tuntuɓar Nikita Mazepin da Valtteri Bottas bi da bi.