On board history recovery question

Hi Everyone,

I need your help please. I have a BMW 5 series 2016 plates U.K. model. I need to show that my car was stationary for a couple of weeks and I’m told the technology on m6 vehicle already exists and is stored in the onboard computer which can then be downloaded. Is it or can I prove it another way say the onboard sat navhistory etc?

Thanks

Baymw