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For many electric vehicle owners, the first cold-weather drive raises the same question: how much range will I lose this winter?

The honest answer is that winter range does drop. In a Canadian Automobile Association (CAA) winter test, electric vehicles travelled 14% to 39% less than their official Natural Resources Canada range ratings in temperatures between approximately -7°C and -15°C.

That may sound concerning, but it does not mean your EV suddenly becomes unreliable. Most of the reduction is a normal, temporary response to cold temperatures, cabin heating, winter tires, and road conditions. With a few practical habits and a professional seasonal inspection, you can drive confidently throughout an Ingersoll winter.

What CAA’s Ontario winter EV test found

CAA’s winter test was designed to show how electric vehicles perform in real Canadian conditions rather than relying only on laboratory ratings.

The vehicles were driven in sub-zero temperatures on a route designed to reflect a mix of everyday and highway driving. CAA compared the distance each vehicle travelled with its official NRCan range rating.

The results showed a wide spread:

• Some vehicles lost approximately 14% of their rated range.
• Others lost closer to 30%.
• The largest reduction in the test was approximately 39%.
• Across the tested vehicles, winter performance was commonly around two-thirds to three-quarters of the official rating.

You can read the full results in CAA’s winter EV test report.

It is important to understand what these numbers mean. Official range ratings are useful for comparing vehicles, but they are not a promise of the exact distance you will travel on every drive. Your speed, route, temperature, wind, tire choice, heating settings, traffic, and driving style all affect the result.

A vehicle rated for 400 kilometres, for example, might provide roughly 250 to 340 kilometres in challenging winter conditions. Your actual results may be better or worse depending on the day.

Why does an EV lose range in cold weather?

Several factors work together. Think of your EV’s battery like a person exercising outdoors: it can still do the job, but it needs more energy to perform efficiently in the cold.

Cold slows battery chemistry

Electric vehicle batteries work through chemical reactions. When the battery is cold, those reactions become less efficient. The vehicle may limit power temporarily, and more energy may be used to warm the battery to its preferred operating temperature.

This is why a cold-soaked EV can show a lower range estimate immediately after starting. As the battery warms during driving, the estimate may change.

The reduction is usually not permanent battery damage. When temperatures return to milder levels, your EV will generally recover much of its normal efficiency.

Cabin heat uses battery energy

A gas-powered vehicle produces a lot of waste heat from its engine. An EV does not have the same engine heat available, so it must use electrical energy to warm the cabin.

If you set the cabin temperature high and drive for a long time, the heater can consume a noticeable amount of energy. The effect is especially noticeable on short trips, when the vehicle spends a larger share of the journey warming the cabin.

Winter tires and road conditions increase resistance

Winter tires are essential for traction and safety, but their tread compounds and patterns can create more rolling resistance than some all-season tires. Snow, slush, standing water, and icy roads add even more resistance.

Cold air can also increase aerodynamic drag slightly, while winter winds make the battery work harder at highway speeds.

Tire pressure drops in cold temperatures

As temperatures fall, tire pressure falls too. Underinflated tires create more rolling resistance, reduce handling precision, and can lower range.

Always use the pressure listed on your vehicle’s driver-door placard or in the owner’s manual. The number on the tire sidewall is usually the maximum pressure, not the recommended setting for your vehicle.

How to prepare your EV for winter in Ingersoll

The best winter strategy is not to chase one perfect range number. It is to reduce avoidable energy loss and give yourself a comfortable buffer.

1. Precondition while the vehicle is plugged in

Use your EV’s scheduled departure or preconditioning feature whenever possible. This warms the cabin and, on many vehicles, helps bring the battery to a more efficient temperature before you leave.

Doing this while connected to your home charger allows the vehicle to draw much of that energy from the electrical system rather than using the battery during the first few kilometres.

Preconditioning also makes the vehicle more comfortable and can reduce the temptation to run the heater at maximum output for the entire drive.

2. Keep a higher charge level in winter

You do not need to keep every EV at 100% all the time. However, winter driving is easier when you have more energy in reserve.

Consider keeping your charge level somewhat higher than you might during mild-weather commuting, especially when:

• A significant snowstorm is expected
• You are travelling outside Ingersoll
• Public charging options along your route are limited
• You expect to park outdoors for several hours
• Temperatures are forecast to fall well below freezing

Follow your manufacturer’s recommendations for daily charging and maximum charge levels. The goal is to create a practical buffer, not to change your routine unnecessarily.

3. Check tire pressure before the first deep freeze

Inspect tire pressure when the tires are cold, then adjust them to the vehicle manufacturer’s recommended setting.

While you are checking pressure, look at tread depth and inspect for uneven wear. Properly maintained tires help your EV use energy efficiently, but more importantly, they provide the grip you need on wet, snowy, and icy roads around Ingersoll and nearby communities.

A seasonal tire inspection should also include wheel condition and alignment. A vehicle pulling to one side or wearing tires unevenly may be using more energy than necessary.

4. Use heated seats and the steering wheel wisely

Heated seats and a heated steering wheel use less energy than warming the entire cabin to a high temperature. They are not a replacement for safe visibility or a comfortable driving environment, but they can help you stay warm while reducing demand on the cabin heater.

Never compromise windshield visibility. Use the defroster as needed, clear all snow and ice before driving, and make sure the vehicle’s climate system is working properly.

5. Park indoors when practical

A garage or sheltered parking space can make a meaningful difference. Starting with a warmer battery and cabin reduces the energy required to get moving.

If you do not have access to indoor parking, plugging the vehicle in before departure and using scheduled preconditioning can still help. Brush snow away from the vehicle, keep charging equipment clear, and follow the manufacturer’s instructions for outdoor charging in winter weather.

6. Plan for winter range instead of summer range

Do not wait until the battery is nearly empty before looking for a charger. On longer trips, plan with a reasonable winter buffer and identify charging locations before you leave.

Highway speeds, strong headwinds, heavy snow, and extreme cold can all reduce efficiency more quickly than expected. A little extra planning can prevent unnecessary stress if traffic slows or a charging station is busy.

What an EV winter service check should include

Routine maintenance still matters on an electric vehicle. EVs do not need oil changes, but they do have tires, brakes, suspension, heating and cooling systems, charging components, and a 12-volt battery.

A professional winter inspection may include:

• Checking tire pressure, tread, and wear
• Inspecting brakes and suspension
• Testing the 12-volt battery
• Checking charging equipment and the charging port
• Reviewing warning lights and diagnostic information
• Inspecting approved cooling and thermal-management systems
• Confirming that climate-control and defrost functions operate correctly

If your EV shows a battery, charging, propulsion, or temperature warning, arrange an inspection rather than guessing at the cause. High-voltage systems require the right training, equipment, and safety procedures.

Butterworth’s inspection and diagnostic service in Ingersoll is designed to identify problems accurately before they become unexpected breakdowns. Our team also provides advanced automotive system services for modern vehicles.

Why choose Butterworth’s for EV repair in Ingersoll?

Winter range concerns are easier to manage when you have a local team you can trust. Butterworth’s Service Centre has served drivers in Ingersoll and the surrounding area for more than 40 years.

We are a family-operated NAPA AUTOPRO partner that services all makes and models, including electric vehicles. We are also one of the few certified VinFast repair shops in Ontario, giving VinFast owners access to local expertise when they need maintenance or repairs.

Our work is backed by a 24-month/40,000 km Peace of Mind Warranty, and eligible NAPA parts and services may also be covered by NAPA’s warranty programs. We will explain what we find, what needs attention now, and what can be planned for later.

Enjoy winter driving with more confidence

CAA’s data confirms that EV range loss in Ontario winter is real. It also shows that the change is manageable when you understand what causes it.

Precondition while plugged in, keep your tires properly inflated, use cabin heat thoughtfully, maintain a winter charge buffer, and have your vehicle inspected before the coldest weather arrives. These small steps can make daily driving more predictable and help protect your peace of mind.

If you need EV repair in Ingersoll, seasonal diagnostics, or a winter readiness check for your electric vehicle, book an appointment with Butterworth’s Service Centre or call (226) 641-5964. We will help you prepare for the road ahead, whatever the Ontario forecast brings.