The Thule EasyFold XT 3 bike carrier is designed to be mounted on a tow bar, so it should be compatible with the electrically removable tow bar on your 2018 Ford Kuga ST-Line, provided that the tow bar meets the mounting standards of the bike carrier. Please ensure that the total weight of the bicycles does not exceed the maximum load of 60 kg. To confirm specific compatibility, I recommend you consult the official Thule website or contact an authorised Thule dealer.