Mini as a starter?

I just owned a BMW E46 but had to sell as the maintenance cost were insane and rust was building.

Everyone tells me to buy Volkswagen polo but come on life is too short to drive around in a shitty car, I’m looking at a 2015 mini Cooper S Countryman. 127,000KM 1 owner. Dealership for €10,000.

Insurance would be about €2000 what would I be looking at maintenance or even just a service on this?