Tesla sold almost 60% fewer cars in Germany in January than in the year-earlier period, as the U.S. electric vehicle maker faces a test of popularity amid headline-grabbing political involvement by its billionaire CEO Elon Musk.

Tesla’s sales have dropped nearly 60% in January in Germany compared to the same period last year. The same thing is happening throughout Europe. Earlier this week, we reported that Tesla’s sales crashed throughout all European markets in January.