Your car’s app could be telling Big Tech who you are and where you go

A study testing 21 cars from 19 brands and 30 companion apps found connections to advertising and tracking companies, and evidence that some apps shared sensitive personal data.

Modern cars can unlock remotely, route around traffic, stream entertainment, summon roadside help, and cool or heat the cabin before you get in. But those conveniences come with a privacy cost that drivers may struggle to see and are unable to refuse.

We’ve covered cars and privacy a few times before, especially after Mozilla researchers described cars as a “privacy nightmare.”

Texas Attorney General Ken Paxton investigated car manufacturers seeking details of their data collection and sharing practices, and sued General Motors over allegations that it sold customer driving data to third parties.

Researchers from Northeastern University, working with Consumer Reports, tested vehicles from model years 2022 through 2025 and companion apps, observing network traffic while cars were stationary, driven, and used through their apps. The results reinforce an uncomfortable reality: connected vehicles are data-collection platforms on wheels.