Your car will no longer be sending out any of the following:
- Your location and places you were parked
- Driver behavior (How you were driving)
- Text messages you sent and received
- Phone numbers you dialed or received calls from
- Your private conversations
- Video stream or recording from any of the cameras in the car
Don't worry,
- It's completely safe for the car
- No warning lights or fault codes
- No dealer or a mechanic can figure out why it doesn't connect
- Changes are undetectable
- Changes will not be reversed with any software update
- It's reversable
Downsides:
- No Internet connection for your car multimedia
- No software updates
- No Internet radio
All downsides can be temporarily avoided by connecting your
car to a hotspot, e.g. your phone