The new plants are to be set up in the eastern Chinese cities of Tianjin and Qingdao.
The automaker also plans to expand production capacity at its plant in Chengdu in western China to 600,000 vehicles per year, Reuters said.
Executives face prosecution over failure to disclose likely financial damage to investors sooner.
France's No. 2 carmaker joined larger French rival Renault under scrutiny, but shares in both rose on reports of a bumper 2016 for European new-car sales.
Amid investigations into alleged diesel emission cheating, global automakers and regulators are struggling to define and comprehend shifting rules and enforcement from region to region.
President-elect Trump goes on the attack in a new series of media interviews.