Under the GDPR you could force BMW to hand over what data they have on your car. That way you would at least have some idea of what gets stored and for how long.
As a US citizen residing in the US, no I couldn't. (They might voluntarily disclose, applying GDPR globally, but they aren't required to do so.)
Additionally, my interaction is with BMW USA, not BMW AG. If teleservices is instantiated locally in the US for US customers, then it's doubly the case the BMW need not respond to any such inquiry.
Additionally, my interaction is with BMW USA, not BMW AG. If teleservices is instantiated locally in the US for US customers, then it's doubly the case the BMW need not respond to any such inquiry.