unauthorized airtag tracking
If an airtag has already been paired to another apple id, and is put on your car, will it notify YOU that you are being tracked?
MacBook, OS X 10.11
Question marked as
Yes. If any AirTag, AirPods or other Find My network accessory separated from its owner is seen moving with you over time, you'll be notified.
You can learn more here: What to do if you get an alert that an AirTag, Find My network accessory or set of AirPods is with you – Apple Support (UK)