The stock’s high valuation is another reason for caution. Tesla shares trade at 92 times forward earnings, compared to 21 times for the S&P 500 and an average of 28 times for Tesla’s mega-cap peers.

How did a 20-employee company making mobile phone batteries go on to de-throne Tesla as the world’s top-selling manufacturer ...

The New York Times interviewed more than 60 people familiar with Mr. Musk’s effort to piece together new details about it.

Xiaomi, which produces smartphones and consumer electronics, delivered 135,000 E.V.s last year after tapping China’s robust ...