sciencegirl wrote:Winters are my worry. Anyone with two cents worth on worst case scenario ranges in tri-state area winter
in which January is the coldest month with temps avg upper 30's to lower 40's. Otherwise temp avg. for the year is 55F?
A lot depends on how you use heating and how much defrost (an energy hog!) is required.
We live in Colorado where the air is dry enough to not require a lot of defrost use, and we minimize heater use by pre-heating the car in the garage before a drive and using seat heat, gloves, and warm clothes rather than cabin heat. All told our winter range loss is ~ 10% compared to balmy weather but it could easily be 40% if our behaviours were different and the car lived outside.
Another confounding factor to consider is that the battery will take up less energy during a charge as the battery temperature decreases in the winter, and battery resistance increases as its temperature drops, adding another inefficiency to winter driving.