>>
>> I think the issue raised by Zippy involved physical access and possibility that data downloaded
>> at a (say) Peugeot dealer might go back to Peugeot Finance and the bank that
>> sits behind that company.
>>
An awful lot of the data will be transient. That stored longer will likely be vehicle and engine mechanical statistics, particularly such things as maximum temperatures, revs, etc. and potentially durations of these. I've little doubt all that can be downloaded by a dealer.
Location data in particular is unlikely to be stored. It is relevant for such functions as auto emergency contact and the like, but this is a real time requirement. If the SIM is disabled, that function, and others similar, simply will not function. There is no standard GPS tracking function installed (otherwise there'd be no aftermarket opportunity). It raises an interesting question, however, and that is how does the emergency call system determine location - my bet would be via mobile mast triangulation, but I may be wrong. (A car with a factory satnav certainly has positioning capability, but the system may be turned off, or there may be no such factory-fit).
If you take the vehicle in for a service, I doubt anyone could tell you where it had been from retrieving telematics data (and the Satnav would only show what routes you'd planned, not where you'd actually been)
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