Easier less costly maintenance. No oil changes, fuel filter changes, injector treatments, air filter changes, radiator flushing, gas additives, etc.
Oil changes are only $25/twice a year for most cars.
Most fuel filters don't need changed. Most vehicle's fuel pump will go out before you would need a filter.
Injector treatments and additives are not necessary and not required maintenance.
Air filter changes are once every 20,000 miles. It's $10.
Radiator flush/fill isn't required until 60,000 miles on most cars.
Most EV owners are installing the EVSE at up to $2000.
OThat's much higher than all the maintenence items combined.