A?Mercedes-Benz Smart on display at an auto expo in Fuzhou, capital of Southeast China's Fujian province, April 29, 2015 [Photo/VCG]

BEIJING - German carmaker Mercedes-Benz will recall 6,302 vehicles in Chinese mainland over defective hood locks, China's quality watchdog said Tuesday.

The affected vehicles are the imported Smart series, manufactured between May 12, 2015 and Oct 2, 2015, the General Administration of Quality Supervision, Inspection and Quarantine said in a statement.

The automaker said the locking device may loose when moving at high speed, which could cause the vehicle's hood to open.