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Cold weather generally reduces an electric vehicle’s range more than hot weather does. In AAA’s 2026 controlled test, three EVs had 39.0% less calculated range at 20°F than at 75°F; at 95°F, their calculated range was 8.5% lower than at 75°F. Those results are useful benchmarks, not a forecast for every electric SUV: the test was not limited to SUVs, and actual range depends on the vehicle, climate controls, route, speed and conditions.
What happens to an electric SUV’s range in cold or hot weather?
Range usually decreases in both extremes, with cold presenting the larger challenge in the two AAA test summaries available here. In winter, energy is used to warm the cabin and manage battery temperature, while the battery is operating in less favorable conditions. In hot weather, air conditioning and thermal management use energy to cool the cabin and battery. The size of the effect varies, so a single percentage cannot predict every SUV or trip.
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For a driver, the practical consequence is not simply a lower number on a chart: a trip that is manageable in mild weather may require more charging or a different plan in severe cold or heat. Use the vehicle’s own range and route-planning tools, account for the expected conditions, and locate charging options before leaving.
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AAA’s 2026 automotive engineering team, working with the Automobile Club of Southern California’s Automotive Research Center, tested three EVs and three hybrids on a chassis dynamometer. The lab conditions were 20°F, 75°F and 95°F, with vehicle HVAC set to 72°F. The figures below compare the EV results with the 75°F condition.
| Test temperature | Change in EV efficiency (MPGe) | Change in calculated EV range | What the result means |
|---|---|---|---|
| 20°F | 35.6% lower | 39.0% lower | Cold produced the larger reduction in this test. |
| 75°F | Baseline | Baseline | Reference condition for the reported comparisons. |
| 95°F | 10.4% lower | 8.5% lower | Heat also reduced efficiency and range, but less than the 20°F result in this test. |
MPGe and calculated range are related measures, but they are not interchangeable results: AAA reported separate percentage changes for each. The 35.6% drop in MPGe at 20°F, for example, is not the same figure as the 39.0% drop in calculated range. When comparing reports, keep the stated measure and temperature conditions attached to the number.
These are AAA’s results for three tested EVs, not a measurement of a representative group of electric SUVs. The controlled test helps show how temperature can matter, but it does not establish that a particular SUV will lose 39.0% in cold or 8.5% in heat. Model design, thermal management, HVAC use and driving conditions all affect the outcome.
AAA’s 2019 test of five EVs reported different averages: a 41% range reduction at 20°F with cabin heating and a 17% reduction at 95°F with air conditioning, each compared with 75°F. Those findings should remain attached to their study, sample and stated conditions. They should not be combined with the 2026 figures into a universal winter or summer estimate; the studies were conducted in different years and used different samples and test setups.
Why cold and heat affect range
Cold weather
Cold-weather range loss has two relevant demands. The vehicle needs energy to warm the cabin to a comfortable temperature and to manage battery temperature; at the same time, the battery is operating in less favorable conditions. How these demands translate into range depends on the vehicle and circumstances. The cited tests report measured outcomes but do not isolate a single cause or assign a fixed share of the loss to cabin heat, battery conditions or other factors.
That is why a driver should treat a severe-cold estimate as trip-specific rather than assume every winter journey will match a laboratory percentage. Whether cabin heat is needed, the vehicle’s thermal-management design, route and speed can all affect the actual result. The AAA figures provide a benchmark under stated test conditions, not a formula for adjusting every SUV’s label range.
Hot weather
In hot conditions, air conditioning draws energy to cool the cabin, and the vehicle’s thermal management may also need to cool the battery. AAA’s 2026 result shows a smaller range reduction at 95°F than at 20°F under its test conditions, not that hot weather is harmless or that every SUV will follow that pattern. The measured effect depends on the particular vehicle and conditions.
Why the same temperature can produce different trip results
Temperature is only one part of the picture. The Environmental Protection Agency (EPA) identifies temperature, HVAC use, speed and driving behavior as factors affecting real-world range. A controlled temperature result therefore cannot account for every route, driving style or climate-control choice. Nor does a general temperature benchmark rank particular electric SUVs.
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How to interpret the EPA range on an electric SUV
An EPA range figure is based on standardized procedures that include hot and cold conditions. It is useful for comparing vehicles under a common method, but it is not a guarantee that a vehicle will cover that distance on a specific trip in extreme weather. The EPA notes that temperature, HVAC use, speed and driving behavior affect real-world range.
For trip planning, start with the SUV’s own range estimate and route planner rather than treating its label figure as a weather-adjusted promise. Consider the forecast and how you expect to drive, then check charging options along the route. A vehicle estimate can inform the plan, but the AAA test results do not supply a precise correction factor for an individual SUV or journey.
In practical terms, the label is best used as a consistent comparison point when considering vehicles, while the onboard estimate and route guidance are more relevant to a particular departure. Neither removes uncertainty in extreme weather. If conditions change or the vehicle’s estimate differs from expectations, reassess the plan and charging stops rather than relying on a percentage drawn from a different vehicle or test.
How to prepare for a trip in extreme temperatures
- Check the vehicle’s estimate and route. Enter the trip in the vehicle’s range or route-planning tool. Account for the expected weather and driving conditions, and identify charging options before departure.
- Precondition while plugged in, if supported. Set the cabin temperature before leaving while the vehicle remains connected to power. This can reduce the energy drawn from the battery to bring the cabin to a comfortable temperature at the start of the trip.
- Choose comfort settings deliberately. If the SUV has seat or steering-wheel heating, use those features to focus warmth where needed rather than relying only on cabin heat. This is practical guidance, not a guaranteed range-saving amount.
- Check tire inflation. Keep tires properly inflated. This is sensible vehicle preparation, but it does not prevent the battery and HVAC effects of extreme temperatures.
- Allow for additional charging. Plan more frequent charging in extreme temperatures rather than assuming the mild-weather estimate will hold. Keep the plan tied to the vehicle’s route guidance and available charging options.
A tire-pressure gauge can be a simple tool for checking inflation, particularly when preparing for a trip. It is not a device that prevents cold-weather battery or HVAC losses; its role is limited to helping you check tire pressure. Whatever tools you use, follow the vehicle’s recommended tire-pressure information and keep the charging plan grounded in the route and the conditions you expect.
What heat pumps and preconditioning can—and cannot—tell you
A heat pump draws heat from outside air and warms the cabin more efficiently than an electric resistance heater in most conditions, according to the U.S. Department of Energy (DOE). That general point does not establish a specific range gain for any SUV. Heat-pump availability and performance vary by vehicle and temperature, so a buyer should check the equipment and evidence for the exact model and trim rather than assume all versions have the same system.
Preconditioning can reduce the energy taken from the battery to warm the cabin at the beginning of a trip when it is done while the vehicle is plugged in, if the vehicle supports that operation. Check the owner information or vehicle controls for whether preconditioning is available and whether it can run while connected. It is a way to manage the start of a trip, not a way to erase weather-related range effects.
These features are worth checking, but they are not stand-alone guarantees. A heat pump’s presence does not tell you precisely how an SUV will perform at a particular temperature, and preconditioning does not cancel out the range effects of a long or demanding trip. Model-specific specifications and operating instructions matter more than a general feature label.
How to compare electric SUVs for a cold or hot climate
The cited temperature studies do not rank electric SUV models. For a useful comparison, look at the same model year and trim for each vehicle, and verify the features and conditions that affect your own use. A general claim about EV temperature performance is not enough to establish which SUV will suit a particular route or climate.
- Heat-pump availability: Confirm whether the exact trim includes a heat pump; do not infer it from the model name alone.
- Preconditioning: Check whether the cabin or battery can be preconditioned, and whether the system can operate while the vehicle is plugged in.
- Cabin-heating options: Compare available comfort controls, including seat or steering-wheel heating, where fitted.
- EPA range: Use the figure for the same model year and trim, and remember that it is a standardized comparison rather than a promise for extreme-weather trips.
- Test conditions: For any independent temperature test, check the temperature, vehicle sample, HVAC settings and whether results concern SUVs specifically.
- Route and charging access: Consider the routes and speeds you expect to use and the charging options available along them.
If a manufacturer or test source does not provide a model-specific result under comparable conditions, the temperature evidence here cannot fill that gap. The AAA results establish that temperature can have a substantial effect across the tested EVs, but they do not say which SUV will lose the least range.
For a fair comparison, avoid pairing one vehicle’s EPA number with another vehicle’s independent cold-weather result as if they came from the same procedure. Keep model year, trim, stated test temperature, HVAC setting and sample in view. If the available evidence does not match your intended climate and route, treat the comparison as incomplete instead of assuming one SUV has a proven advantage.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What the numbers can—and cannot—predict
The most useful reading of the AAA results is directional: in those controlled tests, cold had a larger effect than heat, while heat still reduced range. The exact figures belong to the vehicles and test conditions reported by AAA. They do not predict the range of every SUV, and the 2019 and 2026 results should not be treated as interchangeable or averaged together.
For a particular journey, the EPA label and broad test averages are context, not a substitute for the vehicle’s route estimate. Weather, HVAC, speed and driving behavior can all change the result. Preconditioning where supported, targeted comfort settings, properly inflated tires and deliberate charging plans can help drivers prepare, but none guarantees a particular range in severe weather.
Frequently Asked Questions
How much range does an electric vehicle lose in winter?
There is no single percentage for every electric SUV. AAA’s 2026 controlled test found 39.0% less calculated range at 20°F than at 75°F across three tested EVs, with HVAC set to 72°F. AAA’s 2019 test of five EVs reported an average 41% reduction at 20°F with cabin heating. The samples and setups differed, so these figures are benchmarks, not a guaranteed loss for a particular SUV.
Does hot weather reduce electric SUV range?
Yes. Air conditioning and vehicle thermal management use energy to cool the cabin and battery. In AAA’s 2026 test, the three EVs had 8.5% less calculated range at 95°F than at 75°F; the 2019 test reported a 17% average reduction at 95°F with air conditioning. Neither number predicts every vehicle or trip.
Why can my SUV’s range differ from an EPA estimate?
EPA range is based on standardized procedures that include hot and cold conditions and is useful for comparing vehicles, but it is not a trip-specific guarantee. The EPA identifies temperature, HVAC use, speed and driving behavior as factors that affect real-world range.
Will a heat pump or preconditioning prevent winter range loss?
No. DOE says a heat pump warms the cabin more efficiently than an electric resistance heater in most conditions, but availability and performance vary and the general guidance does not establish a specific range gain. Preconditioning while plugged in, when supported, can reduce battery energy used to warm the cabin at the start of a trip; it does not erase weather effects.
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How should I compare electric SUVs for cold-weather driving?
Compare the same model year and trim, checking heat-pump availability, whether preconditioning can run while plugged in, cabin-heating options, EPA range, charging access, and the route and speed assumptions that matter to you. For any independent test, check its temperature, HVAC settings, sample and whether it tested SUVs. The cited AAA tests do not rank SUV models.
The Bottom Line
Cold usually poses the greater range challenge, but hot weather can reduce range too. AAA’s test figures are useful context rather than an SUV-specific promise. Use your vehicle’s route estimate, prepare for the forecast, precondition while plugged in if supported, and plan charging stops with a margin.
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