General Motors Co will add four new plants in the next three years in China to bring its production capacity to 5 million vehicles a year, the head of GM China said on Monday at the Shanghai auto show.

Bob Socia, head of GM China, said that the company and its joint venture partners will invest $11 billion in China by 2016, but did not break out the cost of the new plants.

(Reporting by Bernie Woodall and Norihiko Shirouzu; Editing by Kazunori Takada)