Daimler AG-owned Mercedes-Benz started recalling 6,406 vehicles that were imported in China over a defective passenger seat lock, Xinhua News Agency reported May 26, citing China's State Administration for Market Regulation.

The recall covers Mercedes-Benz C-class cars produced between 2015 and 2017, as well as E-class models manufactured between 2016 and 2017, the report said, citing Mercedes-Benz (China) Automotive Sales Co.'s filing with the country's market regulator.

The backrest of the affected vehicles' front passenger seats may not lock into place properly, making it unable to provide enough support for the passenger in case of a crash and increasing the risk of injuries, Xinhua said.

Mercedes-Benz's local unit will check the locking status of the cars and replace the faulty parts if necessary, according to the report.

Separately, the carmaker is also recalling 42 units of E-class and S-class vehicles manufactured in 2018 due to a seat belt defect, the news outlet added.