My Bolt needs the gearbox oil changed at 150 000 km, and the coolant loops (3 of them) flushed at 5 years. That's the only scheduled maintenance related to powertrain. Tires, wiper blades, interior cabin filter, wheel bearings, suspension parts etc are same as any other car, except brakes last way longer. Mine is still on the original tires at 95 000 km minus whatever has been put on winter tires in the meantime (I've not kept track of that) and there's still something left on them, though this will probably be the last season.
The auto manufacturers are all trying to make money on subscription fees. I refuse to pay for OnStar, and the car works fine without it.
