Earlier quoted context omitted.
There's a cooling system(at least in the EVs where you don't want fast battery degradation) so that is the only "large" maintenance item. Even then it's only at ~45k and runs about $700. Overall running costs for EVs are incredibly low. At 48k miles right now and my cost in tires($1k @ 30k mi) is actually my highest per-mile cost, even above electricity.
Critically though, there is nothing like the head to block interface, which is a major source of cooling system issues on IC engines.
From what I've heard there's some people out there with ~150k and still on the original brake pads(!).