Savings in gas, oil, transmission maintenance, brake pads adds up nicely. However be prepared to lose some of those savings in higher taxes because you aren’t contributing to the roads via gas tax (which is stupid because by and large the ones tearing up the roads are truckers). And of course battery replacement is expensive but I think that’s less of a problem than most people expect.

Caveat: I own a Volt, not a full EV, but I’ve been watching for quite a while.