purchase price, depreciation, registration, maintenance and repairs, etc. That's the real challenge with EV adoption - they're not actually cheap to own.
Depreciation is definitely a negative for
new EVs (though I wonder how much is apples and oranges there, you can't compare a $65k luxury EV to a $25k budget ICE -- depreciation on $65k luxury ice cars is quite steep, too!) Registration seems to be a mixed bag, differing by states, and the likely future EV registration fee. Don't forget
insurance! In
theory maintenance should be a big win for EVs. While oil changes and engine air filters are not significant, there are other things that can add up; more frequent brake pad/rotor replacements, alternator/belts, starter, radiator, plugs/ignition coils. I suspect there are some mediocre longitudinal studies on this, but as EVs become more widely adopted, so should the data to determine how those things net out. Tires are probably generally more expensive with EVs if for no other reason than greater curb weights.
In my own experience, so far the insurance has been reasonable / comparable (only slightly more expensive than our Mazda CX-5, despite being twice the price brand new -- but current KBB value is not hugely different, e.g. $24K vs $33K private party.)
Repairs - that would be a serious concern, e.g. accident repairs.