A Chinese environmental group said it has sued Volkswagen AG (VOWG_p.DE) over its use of software to rig emissions tests, in what state-owned media calls the first public interest lawsuit over the scandal in the German company’s biggest global market. The Volkswagen emission cheating scandal that affects up to 11 million diesel cars globally has spurred investigations, lawsuits and a major leadership shakeup at the company since it was first discovered in September.