The AAA study used five sample cars, each from a different manufacturer, with a minimum 100-mile range and wide availability in the U.S. It compared performance at three temperatures: 20°F, 75°F, and 95°F, per the SAE International standard, used in the automotive industry. Many Tesla owners began reporting issues with their Model 3 vehicles, Bloomberg accounts from a number of Tesla owners that faced range issues during the recent cold weather. That could cut the vehicle's range by 41 percent, it said. She went on to say, "Automakers are continually making advances to improve range, but with this information, drivers will be more aware of the impacts varying weather conditions can have on their electric vehicles".
Also, the lithium ion batteries in EVs prefer temperatures of about 70 degrees, as their chemistry doesn't perform efficiently in extreme cold.
Each vehicle would be placed on a dynamometer (typically used to chart vehicle power output) in a climate controlled environment.More news: Warren: 'I Am a Candidate for President'
HVAC use, however, "resulted in considerable reductions in driving range", AAA said, noting that an outside temperature of 20 degrees Fahrenheit resulted in a 41-percent decrease in driving range, while an outside temperature of 95 degrees Fahrenheit resulted in a 17-percent decrease.
Test vehicles were selected using a pre-determined set of criteria such as availability for sale throughout the USA with a minimum EPA-estimated driving range of 100 miles.
Tesla has created a Supercharger network around the world that allows its electric vehicles to power up for long distance travel. For instance, AAA's study found the use of heat when it's 20°F outside adds nearly $25 more for every 1,000 miles when compared to the cost of combined urban and highway driving at 75°F.
To charge a Tesla, drivers park and plug in their vehicle using the connector at the Supercharger post.More news: Vivo upgrades its cool pop-up selfie camera with massive number of megapixels
Drivers can monitor charging progress on your instrument panel or Tesla App.
The firm now has more than 1,200 Supercharger Stations with 9,800 Superchargers across the globe.
The automobile club tested the cars at 20 degrees and 95 degrees, comparing the range to when they were tested at 75 degrees Fahrenheit, according to a report on the study.
Range would take a hit mainly for short trips, and the decrease wouldn't be as large on longer trips once the battery and cabin are heated, Hughes said. Take a look at anything you own that is battery powered and more likely than no it will have an optimum battery range of around 40°F to 120°F. Extreme temperatures certainly play a role in diminishing driving range, but the use of HVAC in these conditions - particularly the heat - has by far the greatest effect.More news: Free mobile roaming charges law ends with no-deal Brexit
AAA calculates that running the heater in the cold adds about 2.5 cents per mile in their test sample of electric cars.