An EV range figure is a useful reference, but real-world range changes with speed, temperature, traffic, terrain, climate control and driving style.
What EV Owners Should Know
Highway speeds generally consume more energy because aerodynamic drag rises quickly. Cold weather can also reduce efficiency because the battery and cabin may need additional heating.
Final Thoughts
For everyday driving, plan around your normal conditions and keep a sensible reserve instead of treating the advertised range as a guarantee.