Comment by blendo

By default, our Mazda CX-30’s “Telematics Control Unit” transmits vehicle history up to MazdaUSA every time you turn the engine off.

However, you can disable this by following a procedure explained in the owner’s manual (basically, you call Mazda and give them your VIN.)

I’ve also seen similar “opt-out” procedures listed in a Toyota GR86 owner’s manual.

I’d prefer to just pull the car’s SIM card to be absolutely sure :-)