Tesla Recalls 2 Million Cars to Fix Autopilot Safety Flaws (3)

Tesla Inc. will fix more than 2 million vehicles — its biggest recall ever — after the top US auto-safety regulator determined its driver-assistance system Autopilot doesn’t do enough to guard against misuse.

The move is the result of a years-long defect investigation that the National Highway Traffic Safety Administration will keep open to monitor the efficacy of Tesla’s fixes. A NHTSA spokesperson said the probe found that Tesla’s means for keeping drivers engaged were inadequate.

Tesla offers Autopilot as a standard feature.

Photographer: David Paul Morris/Bloomberg

“Automated technology holds great promise for improving safety, but only when it is deployed responsibly,” NHTSA said Wednesday. “Today’s action is an example ...