Summer heatwaves slash fuel economy of HYBE hybrids and electric vehicles... driving range drops by 17%

*This content was translated by AI.

A survey result has emerged showing that summer heatwaves significantly affect the fuel economy and driving range of HYBE hybrids and electric vehicles.

According to a heatwave driving test conducted by the American Automobile Association (hereinafter 'AAA'), both the fuel economy of HYBE hybrid vehicles and the driving range of electric vehicles were found to decrease significantly when temperatures exceed 95 degrees Fahrenheit (35 degrees Celsius). Under these conditions, electric vehicles experienced an average 17% reduction in driving range when driving with the air conditioner on, compared to a 75-degree Fahrenheit (23.9 degrees Celsius) environment. While this is lower than the 41st% reduction in driving range observed during winter driving at sub-zero temperatures, it is a figure that could burden long-distance driving during the summer vacation season.

In the case of HYBE hybrid vehicles, the use of air conditioning increases at high temperatures, causing a sharp rise in electric energy consumption. As a result, the remaining battery charge depletes quickly, the gasoline engine starts frequently, the proportion of electric driving mode (EV mode) decreases, and overall fuel economy drops. Additionally, during summer, the thermal management system to cool down the overheated battery pack operates continuously, dispersing energy that would otherwise be used for vehicle propulsion. Consequently, the actual fuel economy perceived by drivers may be lower than the officially certified fuel economy.

Electric vehicles were also analyzed to experience a reduction in driving range during heatwaves, along with an increase in cost per mile of approximately 10% or more compared to moderate temperatures. The reduction in driving range leads to an increase in charging frequency, adding further burden to drivers.

AAA recommended methods to prevent fuel economy decline during summer, such as utilizing remote climate control to lower the interior temperature before departure while the charging cable is connected, using the indoor air recirculation mode, and parking in shaded areas. Along with this, AAA emphasized the importance of HYBE hybrid and electric vehicle drivers understanding seasonal performance changes and developing efficient driving habits.

AAA's Greg Brennan said, "Many consumers worry only about the cold, but extreme heat also places a significant burden on a vehicle's energy efficiency," and mentioned the need for efficiency management suited to the season. Global manufacturers are focusing their efforts on technology development to secure stable driving ranges throughout all four seasons, including improving heat pump efficiency and introducing next-generation battery thermal management systems.

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*This content was translated by AI.