New US Agency Joins Fray Over Massachusetts Repair Law, Car Data

Automakers in Massachusetts shouldn’t comply with a state law that would require them to share more vehicular telematics data with third parties because it’s preempted by federal law, the National Highway Traffic Safety Administration warned.

The controversial law—which state Attorney General Andrea Campbell began enforcing on June 1—could allow hackers access to remotely access and control cars, the agency said in a Tuesday letter to manufacturers that it also filed with the US District Court for the District of Massachusetts.

The advisement represents the federal government’s most direct foray into a nearly three-year-long court battle over complying with the Massachusetts ...