U.S. government investigates Mercedes-Benz, says company is too slow mailing recall notices

The U.S. government is investigating German automaker Mercedes-Benz, alleging that is has been slow to mail safety recall notices and file required reports involving recalls of over 1.4 million vehicles.    The National Highway Traffic Safety Administration says in documents that a review shows Mercedes exceeded time limits for mailing letters to owners. 
Source: WA news