Hybrids seem likely to have more maintenance costs than pure EVs, but I think it's clear that EVs are still too expensive to be truly cost-efficient. If what you care about is lowest TCO, you can get a car of comparable size to the Bolt for like more than $15k cheaper, and of course you won't make that back up in fuel.

I expect that the Bolt will also have crappy resale value, if, as I think we all expect, EVs continue to get substantially better over the next few years.

The reason to get a Bolt right now is because you are ideologically committed to EVs or because the whole deal of mostly not having to deal with fueling up your car/liking the acceleration profile of an EV/etc., not because it's genuinely the lowest TCO.