NHTSA launched an investigation into 560,000 Ford vehicles following a $165 million fine that raised concerns about Ford's safety protocols.

A U.S. government auto safety regulator has opened two separate investigations into Ford vehicles over concerns that prior safety recalls may not have been extensive enough. The National Highway Traffic Safety Administration (NHTSA) announced both probes, which collectively affect more than 500,000 Ford trucks and SUVs, on Nov. 15.

Just days after announcing a civil fine against Ford for moving too slowly on a recall, the U.S. government unveiled two investigations into recalls that may not have worked or covered enough vehicles.

The federal government announced on Thursday that it has levied a $165 million civil penalty against the Ford Motor Company over the automaker's failure to comply with federal recall requirements. It is the second largest penalty in the history of the National Highway Traffic Safety Administration,

The National Highway Traffic Safety Administration said on Monday it has opened two new investigations into Ford recalls, the latest scrutiny by U.S. regulators of the No. 2 U.S. automaker. Last week,

NHTSA unveils two investigations into recalls that may not have worked, just days after announcing civil fine against Ford for moving too slowly.

The National Highway Traffic Safety Administration said on Monday it has opened two new investigations into Ford recalls, the latest scrutiny by regulators of the No. 2 US automaker. Last week, Ford agreed to a $165 million civil penalty after an NHTSA investigation found the automaker failed to recall vehicles with defective rearview cameras in a timely manner.