The U.S. National Highway Traffic Safety Administration opened its second defect investigation related to Tesla Inc.’s Autopilot, subjecting more scrutiny to the carmaker’s driver-assistance technology.
The agency said Thursday it’s launching a preliminary evaluation of unexpected braking by Tesla Model 3 sedans and Model Y sport utility vehicles. NHTSA estimates that the investigation covers about 416,000 cars and said it has received 354 complaints related to the issue in the past nine months.
