I'm due for a cabin air filter change in another couple years.
So yes the bike is costing me more in maintenance! It is hard to compete with 0.
But speaking purely in terms of maintenance, costs are nearly 0.
Assuming I don't but a pot hole, the tires will last me 7-8 years at minimum (I drive a bit under 3000 miles a year).
Brakes are barely used with an EV.
Insurance + tabs is my largest cost.
I bought my EV cash a few years back when prices were super low thanks to hertz offloading their fleet.