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Fact brief - Are electric vehicles unable to function in extreme heat?
Posted on 14 July 2026 by Sue Bin Park
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Are electric vehicles unable to function in extreme heat?
Extreme heat can temporarily reduce range, but recent research does not show that EVs are unable to operate in hot weather.
Much of the decrease comes from energy diverted to cool the vehicle, not because EV batteries or motors stop functioning. Modern EVs use thermal management systems to keep components within safe operating temperatures.
U.S. Department of Energy testing in 2024 found EV range fell on average about 14% at an ambient temperature of 95°F (35°C) compared with mild weather. However, the same proportional decrease was measured for gasoline vehicles under comparable conditions.
AAA testing of popular EV models in 2026 found an average range decrease of 8.5% at 95°F. Meanwhile, a 2025 study of 345,000 real-world EV trips found a 16% reduction at temperatures up to 122°F (50°C).
Extreme heat can reduce efficiency, but it does not make EVs unable to function.
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This fact brief is responsive to quotes such as this one.
Sources
U.S. Department of Energy Impact of Cold Ambient Temperature and Extreme Conditions on Electric Vehicles
AAA TEMPERATURE EFFECTS ON ELECTRIC AND HYBRID VEHICLE EFFICIENCY
Applied Energy Extreme heat effects on electric vehicle energy consumption and driving range
Recurrent How Hot Summer Weather Affects EV Range
Columbia Law School Sabin Center for Climate Change Law Rebutting 33 False Claims About Solar, Wind, and Electric Vehicles
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Fact briefs are short, credibly sourced summaries that offer "yes/no" answers in response to claims found online. They rely on publicly available, often primary source data and documents. Fact briefs are created by contributors to Gigafact — a nonprofit project looking to expand participation in fact-checking and protect the democratic process. See all of our published fact briefs here.
Usseful fact brief, but if we are trying to help people clearly understand fact briefs, maybe it's preferable to avoid using double negatives. Instead of writing
"Are electric vehicles unable to function in extreme heat?, No"
write instead
"Are electric vehicles able to function in extreme heat?, Yes"
Nothing wrong with the article, but might be a bit clearer by avoiding double negatives.
After about 10 years of experience w/an EV as primary automobile my observation is that cabin temperature control imposes a fairly modest effect on operations, using 5-10% of available battery in warmish conditions of say ~32C. Usually the hit isn't even visible on the realtime kW power instrumentation and only shows up in cumulative kWh stats after some hours of use.
On one occasion during prolonged parking with the vehicle "on" and in 41C ambient outside temp the kW hit shown via instrumentation became quite visible as work was done to keep the propulsion battery healthy (Bolt separately reports comfort cooling vs battery cooling energy usage).