NHTSA upgrades probe of 382,000 Saturn Ion cars

DETROIT, Oct 3 (Reuters) - U.S. safety regulators have upgraded an investigation more than 382,000 Saturn Ion cars for possible steering problems.

The National Highway Traffic Safety Administration said it opened the engineering analysis after it and Saturn, a brand General Motors Co discontinued in 2009, received more than 4,000 complaints about sudden loss of electronic power steering ...