It's an electric car. They are usually reliable until the battery or drive train fails, at which point they can be used as excellent chicken coops. Things like brakes, body, electrics should be fixable on the cheap by regular non-brand shops.

Those aren't the expensive parts on a BMW, look up what a headlight assembly runs for instance.

The body has a high portion of elements made of carbon fibers. Depending on the damage it can very quickly be a total write-off.