An electric car charges in B.C. (Black Press Media files)

An electric car charges in B.C. (Black Press Media files)

Cold weather can cut electric car range over 40 per cent: study

The automobile club tested the cars at -6.7 C and 35 C

Cold temperatures can sap electric car batteries, temporarily reducing their range by more than 40 per cent when interior heaters are used, a new study found.

The study of five electric vehicles by AAA also found that high temperatures can cut into battery range, but not nearly as much as the cold. The range returns to normal in more comfortable temperatures.

Many owners discovered the range limitations last week when much of the country was in the grips of a polar vortex. Owners of vehicles made by manufacturers including Tesla, the top-selling electric vehicle company in the U.S., complained on social media about reduced range and frozen door handles during the cold snap.

“As long as drivers understand that there are limitations when operating electric vehicles in more extreme climates, they are less likely to be caught off guard by an unexpected drop in driving range,” Greg Brannon, AAA’s director of automotive engineering, said in a statement.

AAA tested the BMW i3s, Chevrolet Bolt and Nissan Leaf from the 2018 model year, and the 2017 Tesla Model S 75D and Volkswagen e-Golf. All have a range of at least 100 miles per charge. They were tested on a dynamometer, which is like a treadmill, in a climate-controlled cell.

The automobile club tested the cars at -6.7 C and 35 C, comparing the range to when they were tested at 24 C, according to a report on the study.

At -6.7 C, the average driving range fell by 12 per cent when the car’s cabin heater was not used. When the heater was turned on, the range dropped by 41 per cent, AAA said.

At 35 C, range dropped 4 per cent without use of air conditioning, and fell by 17 per cent when the cabin was cooled, the study found.

For example, AAA’s testers determined that the Tesla’s range when fully charged at 24 C was 239 miles, but it fell 91 miles, or 38 per cent, at -6.7 C.

In a statement, Tesla disputed the AAA results. The company said that based on data collected from its cars on the road, “the average Model S customer doesn’t experience anywhere near that decrease in range.” The company said the range dropped by roughly 1 per cent at 35 C, but it would not release a percentage for cold weather.

AAA said it followed test procedures drawn up by SAE, an auto engineering trade group.

When the temperature tumbled to 20 degrees last week in Hickory, North Carolina, near Charlotte, Jason Hughes noticed the range fall when he drove his Tesla Model 3 on the commute from home to work.

“It would easily use double the amount of power for that 15-mile trip,” said Hughes, who owns four Teslas and runs a business that refurbishes and sells salvaged Tesla parts.

The cars use energy to heat the battery coolant in cold weather, as well as for heating the cabin, Hughes said. 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.

“It’s definitely an issue,” he said. “If you want to go somewhere far in the cold, you’re going to be using more power.”

Range would be reduced further by extreme cold in northern states, he said.

AAA recommends that drivers heat or cool their cars while still plugged in to a charging station. It says electric cars can still be used in extreme climates with a little extra planning.

Tom Krisher, The Associated Press


Like us on Facebook and follow us on Twitter.

Just Posted

A vehicle was fully engulfed in flames before around 11:10 p.m. Wednesday, June 16, 2021. (Kerry Hutter - contributed)
UPDATE: Kelowna man cuffed after carjacking in Vernon

Crime spree: Man robs couple at Coldstream lookout at gunpoint, sets a vehicle ablaze

Lady Dia, pictured with her son Glory, is a Kelowna artist. She recently received $10,000 in funding for her podcast MoM:ents. (Twila Amato - Black Press Media)
Lady Dia selected as City of Kelowna’s artist in residence

Dia will release a project designed to discuss and shape the future of a more inclusive Kelowna

A Sycamore Road home in Kelowna has been cordoned as police conduct an investigation after a man was found dead at the residence at around 1:30 a.m. on June 17. (Aaron Hemens/Capital News)
Kelowna RCMP investigate death at ‘house from hell’

RCMP said that the incident is isolated in nature

Black Mountain Golf Club in Kelowna, B.C. (Black Mountain Golf Club website/Contributed).
Kelowna father and son golf duo to ‘walk and carry’ 100 holes for ALS

Black Mountain Golf Club is one of 30 participating in the 16th annual PGA of BC Golfathon for ALS

Byron Bertram to appear on stage in Kelowna.
Comedy is back this July in Kelowna

Train Wreck Comedy will host three nights of shows

Bear wanders Kelowna on June 15. (Michelle Wallace/Facebook)
Bear climbs fence, uses crosswalk in Kelowna

The bear was spotted on Baron Road Wednesday evening

Jeanette Megens
KCR: Volunteering is sharing your story

Kelowna Community Resources shares stories of its volunteers in a weekly column

A vial containing the Moderna COVID-19 vaccine is shown at a vaccination site in Marcq en Baroeul, outside Lille, northern France, Saturday, March 20, 2021. THE CANADIAN PRESS/AP/Michel Spingler
mRNA vaccines ‘preferred’ for all Canadians, including as 2nd dose after AstraZeneca: NACI

New recommendations prioritizes Pfizer, Moderna in almost all cases

logo
Evacuation alert issued for residents south of Lytton

The TNRD Emergency Operations Centre in Kamloops says a wildfire in the area poses a threat to structures and residents.

Cannabis bought in British Columbia (Ashley Wadhwani/Black Press Media)
Is it time to start thinking about greener ways to package cannabis?

Packaging suppliers are still figuring eco-friendly and affordable packaging options that fit the mandates of Cannabis Regulations

Birch Parlee is one of approximately 132,000 transgender people living across the nation, according to Statistics Canada. Photo submitted
Transgender in a small town – Princeton B.C.

“I buried it. I pushed it down. I lived a lie.”

Sandra Krauer, Penticton Mayor John Vassilaki and Barb Hoolaeff were in Skaha Park to announce the return of RIbfest for September, 2021. (Brennan Phillips - Western News)
Ribfest returns to Penticton

Festival runs from Sept. 17 - 19 at Skaha Lake Park with proceeds going to new splash park

Surrey Mayor Doug McCallum speaks at a press conference in August 2019 about provincial government approval of the city’s change to a municipal force, joined by councillors (from left) Mandeep Nagra, Allison Patton and Doug Elford. Members of the National Police Federation claim there is still no transition plan in place although Surrey RCMP’s contract with the city is due to end March 31.(File photo)
Elections BC approves petition application for referendum on Surrey policing transition

Application was filed under Recall and Initiative Act by the widow of a Surrey murder victim

(Black Press Media stock photo)
RCMP name 2015 homicide victim near Creston, investigation ongoing

26-year-old Clint Wolfleg was found dead in a private residence on May 31, 2015

Most Read