How Much Range Do EVs Lose in Cold Weather?

In a real-world Canadian winter test, EVs lost between 14% and 39% of their official rated range compared to their Natural Resources Canada ratings. That’s a wide spread, and which end of it you land on depends heavily on the specific vehicle and how it manages cold-weather energy use. Some range loss in winter is unavoidable for every EV on the road today, gas vehicles lose efficiency in the cold too, but the size of the effect is worth understanding before you buy or before your first winter with one.

What the CAA winter test found

In February 2025, the Canadian Automobile Association drove 14 popular EV models, representing more than two-thirds of Canadian EV sales, from Ottawa to Mont Tremblant in temperatures between -7°C and -15°C. Each vehicle was driven until its battery was fully depleted, and the resulting distance was compared against its official NRCan rating.

14%Smallest range loss recorded (best-performing models)

39%Largest range loss recorded

-7 to -15°CTest conditions, Ottawa to Mont Tremblant

The two strongest performers in the test lost only 14% of their rated range, while the weakest lost 39%. That’s a real difference between models, and it’s a good reason to look at winter performance specifically rather than assuming all EVs handle cold the same way.

Why cold weather cuts into range

Battery chemistry

Cold slows the chemical reactions inside the battery

Lower temperatures reduce how efficiently a lithium-ion battery can deliver and accept energy, which lowers both usable range and charging speed.

Cabin heating

There’s no waste heat to borrow from

A gas engine throws off heat as a byproduct of combustion, which is why cabin heat is essentially free in a gas car. An EV has no equivalent, so warming the cabin draws directly from the same battery that powers the wheels.

Denser cold air

Aerodynamic drag increases

Cold air is denser than warm air, which slightly increases the energy needed to push the vehicle through it at highway speed.

What this means for your own driving

Officially posted EV ranges in Canada reflect an annual average, not a winter-specific figure, so it’s worth mentally discounting the rated number by 20 to 40% for deep-winter trips rather than treating it as a fixed guarantee. This matters most for longer drives between cities, where a smaller buffer than expected can mean an unplanned charging stop. It matters less for typical daily commuting and errands, where even a reduced winter range comfortably covers most Canadian driving days.

💡 Tip: Preconditioning your EV, warming the cabin while it’s still plugged in and drawing from the wall instead of the battery, is one of the most effective ways to claw back winter range. See our guide on tips for driving an EV in winter for the full list.

⚠️ Note: Cold weather also slows DC fast charging. A session that adds 200 km in warm weather might only add roughly half that in deep cold, so build extra time into winter road trip plans, not just extra range.

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