Automakers reported crashes from July of last year through May 15 under an order from the agency, which is examining such crashes broadly for the first time.

The National Highway Traffic Safety Administration (NHTSA) has received more than 750 complaints from Tesla owners that their car stopped on roadways for no apparent reason.

Data downloaded from the Tesla Model S shows the vehicle was travelling at 74 mph in a 65-mph zone on a divided highway in Williston, Florida, near Gainesville, the National Transportation Safety Board said in a preliminary report.