The polar vortex last month was particularly harsh for the owners of various electric cars.
The unusually low temperatures in the United States have given rise to a study of the functionality of electric vehicles, which has shown that warming the cabin in winter when the temperature drops below -5 degrees Celsius significantly reduces the range of electric cars.
In the framework of the study conducted by the AAA organization, five popular electric vehicle brands were tested at three different ambient temperatures, using and without using the heating, ventilation and air conditioning systems.
The study examined the BMW i3s, Chevrolet Bolt EV, Nissan Leaf 2018, Tesla Model S 75D and Volkswagen e-Golf from 2017. For each model, the mileage and available energy at ambient temperatures of -7 ° C, 24 ° C and 35 ° C is measured, when the passenger compartment, seat, steering wheel, etc. are switched on or off, as well as when the air conditioning system.
The tests showed that when the temperature drops to -7 ° C and when the passenger compartment heating is switched on, the mileage decreases by an average of 41%.
When the heating is not used, but only the air conditioning system, the electric vehicle's mileage decreases considerably less. At -7 ° C the mileage decreases by 12% and at 35 ° C by 4% (no air conditioner). When using an air conditioner at 35 ° C, the mileage decreases by 17%.
The study made it quite logical to show that the passenger compartment heating system significantly reduces the range of electric vehicles compared to the built-in air conditioner.