Sales of Tesla electric cars fell sharply in the last three months as boycotts over Elon Musk's political views continue to keep buyers away, a significant development given expectations that anger with the company's billionaire CEO would have faded by now.

Tesla Inc. Chief Executive Officer Elon Musk has assumed oversight of sales in Europe and the US, leaving deputy and senior vice president Tom Zhu over Asia, following the high profile departure of Omead Afshar,