The U.S. electric car company’s sales are sliding across Europe, amid what many see as interference in local affairs by Tesla’s chief executive, Elon Musk.

Tesla sales careened lower in Germany in January, as sales of the electric-vehicle company headed by Elon Musk tumble across Europe. The German trade group VDA reported that Tesla new-vehicle registrations fell 60% in January,

Tesla Inc.’s sales plummeted 59% last month in Germany, where Chief Executive Officer Elon Musk asserted himself in national politics like never before.