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My electric car’s displayed range seems fairly reassuring around town, but it drops much faster during a long highway trip. I know the estimate changes as I drive, but the difference feels large enough that I’m not sure whether it reflects normal energy use or a problem with the car.
How much can highway speed, temperature, wind, or cabin heating shift an electric vehicle range estimate? I’d like to understand which conditions matter most, especially on winter highway trips, before I start treating the dashboard number as a reliable arrival prediction.
