Tencent Holdings has bought a five per cent stake in US electric car maker Tesla, the latest investment by a Chinese internet company in the potentially lucrative market for self-driving vehicles.
Tencent's $US1.78 billion ($A2.33 billion) investment, revealed in a US regulatory filing, provides Tesla with a deep-pocketed ally as it prepares to launch its mass-market Model 3.
Tesla's shares rose 2.7 per cent to $277.45 on Tuesday, closing in on Ford Motor as the second-most-valuable US auto company behind General Motors.
Tencent could also help the US company sell - or even build - cars in China, the world's largest auto market, analysts said.
"It certainly is a strong chess move for Tesla," said Jeff Schuster, senior vice president of forecasting for researcher LMC Automotive, citing the cash infusion and "help in navigating the Chinese market".
Tesla founder and chief executive Elon Musk on Tuesday tweeted that he was "glad to have Tencent as an investor and adviser to Tesla".
Musk did not say what he meant by "adviser" but in a separate tweet he noted Tesla had "very few" Model 3 orders from China, where the car has not been formally introduced.
The midsize Model 3 is due to go on sale later this year in the United States.
The deal expands Tencent's presence in an emerging investment sector that includes self-driving electric cars, which could enable such new modes of transportation as automated ride-sharing and delivery services, as well as ancillary services ranging from infotainment to e-commerce.
Those new technologies, and their potential to create new business models and revenue streams in the global transportation sector, have attracted billions in investment from China's three tech giants - Tencent, Alibaba Group Holding and Baidu.
In an investor note, Morgan Stanley auto analyst Adam Jonas said on Tuesday that he would not be surprised to see Tencent and Tesla collaborate in the development and deployment of some of those technologies.
The White House did not immediately respond to a request for comment on the Chinese investment in Tesla, but President Donald Trump has been critical of US automakers and of China trade policies.
Tencent owns about 8.2 million shares in Tesla, the carmaker said.
