I can't find the interactive website, but ACEA have statistics. (I'm disappointed in HN that you have 6 replies without anyone linking the official statistics.)

Year to date in the EU + EFTA + UK, Tesla is 2.5%, BYD 2.7%, Chery 2.5%, of all new cars registered.

The interactive website allowed filtering for e.g. UK + electric cars, but maybe it's no longer available.

https://www.acea.auto/files/Press_release_car_registrations_...