Tesla's privacy policy [1] suggests you can (by disabling connectivity all together), although it does break some features:
> Opting out of vehicle data: Connectivity and performance is a core part of all Tesla vehicles and why some customers choose Tesla, allowing for advanced features and an enhanced driving experience. By default, Tesla provides this seamless experience while protecting your privacy. However, if you no longer wish for us to collect vehicle data or any other data from your Tesla vehicle, please contact us to deactivate connectivity. Please note, certain advanced features such as over-the-air updates, remote services, and interactivity with mobile applications and in-car features such as location search, Internet radio, voice commands, and web browser functionality rely on such connectivity. If you choose to opt out of vehicle data collection (with the exception of in-car Data Sharing preferences), we will not be able to know or notify you of issues applicable to your vehicle in real time. This may result in your vehicle suffering from reduced functionality, serious damage, or inoperability.
I don't know if anyone has tried this.
There are other EVs where it's easier, but it's not something typically featured in the main marketing material.
Regarding eCall (emergency) functionality, "Under EU rules you have the right to use a third party service (TPS) eCall system in addition to the standard 112-based one" and "Any TPS eCall system must: [...] allow the owner of the vehicle to choose between the 112-based eCall and the TPS service" - which also means manufacturers can't force you to use "their" TPS that probably has different privacy trade-offs.
> Opting out of vehicle data: Connectivity and performance is a core part of all Tesla vehicles and why some customers choose Tesla, allowing for advanced features and an enhanced driving experience. By default, Tesla provides this seamless experience while protecting your privacy. However, if you no longer wish for us to collect vehicle data or any other data from your Tesla vehicle, please contact us to deactivate connectivity. Please note, certain advanced features such as over-the-air updates, remote services, and interactivity with mobile applications and in-car features such as location search, Internet radio, voice commands, and web browser functionality rely on such connectivity. If you choose to opt out of vehicle data collection (with the exception of in-car Data Sharing preferences), we will not be able to know or notify you of issues applicable to your vehicle in real time. This may result in your vehicle suffering from reduced functionality, serious damage, or inoperability.
I don't know if anyone has tried this.
There are other EVs where it's easier, but it's not something typically featured in the main marketing material.
Regarding eCall (emergency) functionality, "Under EU rules you have the right to use a third party service (TPS) eCall system in addition to the standard 112-based one" and "Any TPS eCall system must: [...] allow the owner of the vehicle to choose between the 112-based eCall and the TPS service" - which also means manufacturers can't force you to use "their" TPS that probably has different privacy trade-offs.
[1] https://www.tesla.com/en_gb/legal/privacy
[2] https://europa.eu/youreurope/citizens/travel/security-and-em...