Why a “full charge” is the wrong number to budget with
Few drivers charge from empty to full, so the number that shapes your bill is energy per mile, the kWh per 100 miles column. EPA measures it at the wall outlet on Level 2 charging, so the energy lost in the charger is already included. The average US car covers about 11,040 miles a year (FHWA): from about 2,550 kWh a year for the Lucid Air Pure to 5,288 kWh for the Ford F-150 Lightning Extended Range.
Cold weather raises consumption. In testing cited by fueleconomy.gov (a AAA study), EV efficiency at 20°F was about 39% lower with the cabin heater on, and 8% lower with it off.
Where you live matters as much as the car: home electricity averages range widely from state to state (see EV charging cost by state), and on a time-of-use EV plan the overnight price can be a fraction of the evening peak. The EV charging cost calculator prices any model here on your utility’s actual plan and charging hour.