If nothing breaks, normal repairs are fairly routine. The car does have shocks, tires, brakes, a cabin air filter, and wiper blades that need to be serviced like any car. The actual brakes should last a very long time if you actually use the regenerative braking to best advantage. You then only need to use the actual friction brakes if a light changes when you're not ready or someone pulls in front of you (or some other emergency and you're too close without using them).
Most European companies have a long list of things to check, and that does take time. But, except for wear items, the computer is fairly good about announcing a pending problem so it gives you a heads up. A used one is likely to have experienced most all infant mortality failures.
One thing to verify is that all service campaign activities have been addressed along with any pending recalls (there weren't all that many). Those should be free, regardless of the age of the vehicle.
2014 i3 BEV, 2021 X5 45e
(The i3 will be sold soon, <17K-miles, interested?)