2017 Bolt EV with 103,000mi. Battery was changed in April. During the peak summer I was getting roughly 300mi of range.
Currently the temperature has dropped from 80 to 20 degrees f. My range has dropped to roughly 140mi non-highway driving. To add to the loss, the CC2 tires have dropped it roughly 15%. A little nervous with subzero temps approaching, but a fun ride.
25-35% in old resistive heater vehicles.
In high-efficiency “heat pump” vehicles the loss is much less (like 15%).