The biggest vehicle recall in US history is affecting nearly one in every seven American cars.
Takata - a Japanese parts manufacturer - has declared nearly 34 million vehicles defective because of problems with their airbags.
The issue involves defective inflator and propellent devices that may deploy improperly in the event of a crash, shooting metal fragments into vehicle occupants, as reported in the CarAndDriver blog.
The units have been blamed for six deaths worldwide.
About 17 million vehicles are potentially affected in the United States, and another seven million have been recalled worldwide.
US Transportation Secretary Anthony Foxx said: "This recall involves 11 auto manufacturers, many different parts suppliers and roughly double the number of vehicles built in the United States every year."