By Jake Spring

BEIJING (Reuters) - An automotive venture backed by China tech giant Tencent aims to launch an electric self-driving car before 2020, entering a crowded field dominated by US-based Tesla, the chief executive told Reuters on Tuesday.

Future Mobility, backed by Tencent and Hon Hai Precision Industries, is one of an expanding field of China-backed ventures that aim to take on Tesla Motors Inc as green energy car sales boom in China.

Although the venture sought to produce premium cars like Tesla, it would attempt a different strategy from the US company that began with relatively limited production and focuses on a single model at a time, CEO Carsten Breitfeld said in an interview.

"Right from the beginning we define the platform, right from the beginning we define the production process to be mass production and right from the beginning we think of more than one model, a family of models, defined from this platform," Breitfeld said, defining mass production as 250,000 to 400,000 cars annually.

The company was in the midst of closing its Series A round of funding, which also included dealership chain China Harmony New Energy Auto, Breitfeld said.

He declined to give financial terms of the first round or name other potential investors that the company was in talks with, although he said the leadership team would also have partial ownership.

While Future Mobility intended to jump directly to fully self-driving cars, drivers would only be able to turn on full autonomy in a pilot city at first, later expanding to other geographies.

The company would draw from the same battery technology made by a short list of suppliers that most automakers use but aimed to better rivals with more efficient battery management software.

BREAKING OUT

Future Mobility is not the first upstart automaker to make bold pronouncements. Chinese-invested Atieva aims to launch an electric car by 2018.

LeEco says its proposed smart electric cars will eventually be free, making money on in-car content and other services.

Even Tesla now aims to produce 500,000 cars annually by 2018.

But Future Mobility stands out from its competitors for poaching its leadership away from big-name tech and autos companies.

Breitfeld formerly led the BMW i series electric car division and brought the core team with him to the new venture, with others joining from Tesla, Alphabet's Google and Daimler's Mercedes.

(Reporting by Jake Spring; Editing by Stephen Coates)