Tesla is not alone. China has called upon all electric vehicle manufacturers in China to make the same kind of reports — potentially adding to the rich kit of surveillance tools available to the Chinese government as President Xi Jinping steps up the use of technology to track Chinese citizens.

“I didn’t know this,” said Shan. “Tesla could have it, but why do they transmit it to the government? Because this is about privacy.”

More than 200 manufacturers, including Tesla, Volkswagen, BMW, Daimler, Ford, General Motors, Nissan, Mitsubishi and U.S.-listed electric vehicle start-up NIO, transmit position information and dozens of other data points to government-backed monitoring centers, The Associated Press has found. Generally, it happens without car owners’ knowledge.