Lifetime ZOE?

Good day, as the topic of e-mobility takes up more and more driving I am currently collecting information for the purchase of a corresponding small vehicle than 2nd car. The prerequisites with me are actually ideal. Exclusively short distances, max. 400 km/month, parking space with charging possibility directly at the house. So I came to Zoe, which m.E. covers everything so far for my needs. Since I plan at the beginning 60 a usage time of 15-20 years – if it allows the health – and I am used to driving vehicles very long, is for me an important purchase criterion the possible life of a vehicle. If I look on the net after this topic, there are only answers to the life of batteries, but not to the vehicle itself. Battery is not a topic as a rental variant, if I pay my corresponding obulus every month. But what about the technology of the ZOE? Is there information about the duration of the spare parts supply somewhere then read again? How long will there be software updates? How long will the control units and will there be repair options? Is it realistic to buy 4-5 car and then want to use? How much more? How much more information about the weekend?