Global automotive executives have called for a crackdown on counterfeit motor vehicles and automotive parts.

The call, which comes amid accusations of widespread piracy in China, followed a meeting of executives from top manufacturers, including General Motors, Toyota and DaimlerChrysler in Detroit.

“Intellectual property infringements have now reached a scale that cannot possibly be ignored,” a statement from the group, called the Global Automotive Industry Meeting, said.

Several companies have charged some of China’s automakers with copying their vehicles. GM contends China’s Chery Motors builds and sells a copy of its Chevrolet Spark in China.

“The circulation of counterfeit replacement parts, motorcycles and motor vehicles lacking the quality and performance of original products threatens both consumer safety and environmental protection.”