Mr. Musk’s involvement in right-wing politics contributed to a 13% drop in deliveries in the first quarter, including steep declines in E.V.-friendly places like Norway.

Tesla delivered 13 per cent fewer cars in the first quarter of this year, it has said, amid growing backlash to Elon Musk. The company is facing a host of problems, including criticism of chief executive Musk’s role in the Trump government as well as increased competition and an aging line up of electric vehicles.