AAA Study Shows the Impact of Extreme Temperatures on Electric and Hybrid Vehicles
Find out how extreme cold and heat affect EV and hybrid range and efficiency according to new AAA tests. Learn the cost differences and key considerations.
The American Automobile Association (AAA) tested how extreme temperatures affect electric vehicles and hybrids. The tests were conducted in partnership with the Automotive Research Center of the Automobile Club of Southern California.
Three electric vehicles and three hybrids took part in the test. The cars were tested at -7°C, +24°C, and +35°C. Cabin temperature was maintained at +22°C to assess the impact of heating and air conditioning on fuel consumption, range, and operating costs.
Cold weather had the biggest impact on efficiency. At -7°C, hybrids showed a 22.8% drop in fuel economy. For EVs, MPGe fell by 35.6%, and estimated range dropped by 39% compared to conditions at +24°C.
Heat was less severe. At +35°C, hybrids lost 12% efficiency, while EVs lost 10.4% and saw their range drop by 8.5%.
According to AAA calculations, when charging at home, even in winter EVs cost $36.19 less per 1,000 miles (1,610 km) than hybrids. However, with frequent public charging, EVs become $86.26 more expensive. For those deciding which type of vehicle to choose, climate, driving routes, and charging access are key factors.