Skeptical Science

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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.

Go to full rebuttal on Skeptical Science or to the fact brief on Gigafact

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

[Based on Evan's suggestion in the comments, we updated the title to eliminate the double negative. July 15, 2026]

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About fact briefs published on Gigafact

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.