If you've a newer mini, it's over 5 years old and registered in France..... https://transition-one.fr/en/
This is a highly subsidized pipe dream; just the battery pack alone costs at least this (20kWh) wholesale without a BMS. And a modern Mini is filled to the brim with CAN communication which is very time consuming (expensive) to get working.
@markyp started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
If you've a newer mini, it's over 5 years old and registered in France.....
https://transition-one.fr/en/