Question 1

Why is my EV's real range lower than the rated range?

Accepted Answer

EPA range is measured in mild conditions. In the real world, cold weather (cabin and battery heating), highway speeds (aerodynamic drag), hills, cargo, and HVAC use all reduce range. It's normal to see less than the sticker number, especially in winter or on the freeway.

Question 2

How much range do EVs lose in cold weather?

Accepted Answer

Roughly 10–20% near freezing (32°F) and 30–40% in deep cold (near 0°F), based on published cold-weather studies. Most of the loss is energy spent heating the cabin and battery, plus reduced battery performance. Preconditioning while plugged in and using seat heaters instead of cabin heat help.

Question 3

Does highway driving really cut EV range?

Accepted Answer

Yes. Unlike a gas car, an EV is most efficient at lower city speeds where regenerative braking recovers energy. At sustained highway speeds, aerodynamic drag rises sharply, so range drops — often 15–20% versus mixed driving.

Question 4

What efficiency number should I use?

Accepted Answer

Efficiency in miles per kWh comes from your car's rated figure or your own driving data. Typical EVs land around 3–4 mi/kWh; efficient sedans can exceed 4, while large trucks and SUVs may be 2–2.5. Using your own observed average gives the most accurate range estimate.

EV Range Calculator

Frequently asked questions

Related guides

Related calculators

EV Charging Cost Calculator

Tesla Charging Cost Calculator

EV Charging Time Calculator

Level 2 Charger Breaker Size Calculator

Sources & standards