Winter range varies drastically. Here in CT, dead of the winter I'd say we've hit 70-75 miles round trip at the max. Never hit reserve or turtle mode but that is the comfortable limit with the a full range charge and the car starting the trip from our garage. Figure we get home with 12-15% something like that.
What you can't do is string 70 miles of short trips, stopping and letting it cool off along the way. Each stop of more than a couple minutes results in a lot of energy being used to reheat the cabin and assumingly the battery.
For fun we look it for a 24 mile trip in single digit temps one night. It used a shocking amount of charge. Like near or just above 1 mile to KWh.
What you can't do is string 70 miles of short trips, stopping and letting it cool off along the way. Each stop of more than a couple minutes results in a lot of energy being used to reheat the cabin and assumingly the battery.
For fun we look it for a 24 mile trip in single digit temps one night. It used a shocking amount of charge. Like near or just above 1 mile to KWh.