Tesla Inc.’s sales plummeted 59% last month in Germany, adding to indications that Chief Executive Officer’s Elon Musk political activities are hurting the carmaker’s business in major electric vehicle markets.

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 sales plunged 59% in Germany in January, after Elon Musk endorsed the far-right Alternative for Germany (AfD) party and urged people to vote for them during an audio livestream that month.