Edit: Just asked because of curiosity. I’m not actually looking for such vehicles.
Edit 2: So for context, my parents new Toyota has this feature that allows the GPS location of the car to be sent to toyota, then you can see the location via an app on android/ios (it’s supposed to be an anti-theft feature). The data is sent via an antenna that connects to cell towers, which then connects to the internet, and to the toyota servers. “Diagnostic” and “maintenance” information is also sent via those same antennas.
The dealer said it could be turned off, but who knows if they are really off. There’s not a hard switch on the car.
They have integrated modems and WiFi antennas that connect to either the cellular service or the dealership’s WiFi (or your own if you set it up). No way to stop them, I have no idea if the car even turns on if the antenna is broken/non functioning.
It would have to, or else the car would just break during an internet outage, or if it is out of range of mobile service (like if it is in a carpark), and that would be a disaster. Imagine not being able to use a carpark because your car will refuse to start if it doesn’t have an internet signal.