AAA: Heat impacts driving range of electronic vehicles

Drivers of gas-powered vehicles may experience variations in miles per gallon, but a gas station is likely within easy reach. The recharging network for electric vehicles is less developed, making it critical for EV drivers to understand the impact of extreme temperatures on driving range.

Electric vehicles are environmentally friendly and have the added benefit of reducing dependence on imported oil because they use domestically produced energy. Recent evaluations by AAA, however, found that electric vehicle range can be reduced by an average of 33% when temperatures rise to 95 degrees.

The study tested EVs on a dynamometer using the Environmental Protection Agency’s city driving cycle, which simulates stop-and-go traffic, consistent with EPA ratings listed on the window sticker. The average EV battery range in AAA’s test was 105 miles at 75 degrees, but dropped to 69 miles per full charge at 95 degrees. The AAA research was conducted with the Auto Club of Southern California’s Automotive Research Center.