Accounting for 53% of March electric and plug-in hybrid electric car registrations, and 37% for the year to date, the Tesla Model S is far ahead of the pack in Switzerland. The Renault Zoe was #2 for March (17%) and the year to date (22%), followed closely by the BMW i3 (15% and 16%). The Nissan LEAF was an atypical #4 for March (7%) and the year to date (6%).
You can see sales numbers for each of the models in the interactive charts above or in the static charts below.
Sources: Auto Schweiz Suisse & EV-Sales