We drove 14 of them through subzero temperatures until they ran `dry’ — on purpose
This article was written by Michael Bettencourt and was published in the Toronto Star on March 15, 2025.
MONTTREMBLANT, QUE. The last thing any automaker wants to see during EV testing is their vehicle needing a tow. Yet that’s exactly what the plan was for 14 battery electric vehicles gathered by the CAA: charge them up, run them in chilly, but common subzero Canadian winter conditions, then record exactly how far they travelled by the time they slowly expired by the side of the road.
This had been planned carefully to make sure all 14 expiries didn’t happen unsafely on the side of a busy highway, which we drivers appreciated.
The goal was to check how the winter distances actually travelled compared to the official government range ratings given to the vehicles. These ratings are generally seen to represent close to a bestcase scenario, as gas vehicle efficiency ratings do.
It’s true the vast majority of EV charging is done at home or work for local driving. But, for longer drives, or those without homework charge options, battery electric vehicle drivers in Canada can’t always just find an available charging station along their route. And even if they do, it’s important for them to realize that, unlike at a gas station, recharging their EV in winter is going to take longer.
None of these electric vehicles hit their official range, even with careful driving at the speed limit. Not even close. But this was winter. So this may surprise no one, given that temperatures ranged between 6 C and 15 C on our full two days of range and DC quickcharge testing.
Some EVs here actually got closer to their official numbers than we expected, while others fared worse.
But, on average, this group of 14 EVs were recorded roughly a quarter less range than their window stickers advertised.
Before we detail which EVs and companies fared best and worst at travelling the furthest in the cold, how accurate each vehicle predicted this reduced range to the driver and other key parameters, it’s worth highlighting how these figures were achieved.
The big range test started in Ottawa and ended in MontTremblant, Que., but unlike the two hours that the usual 162kilometre drive takes, our much more meandering route totalled 431 kilometres. This consisted of four to seven hours of driving in total, the route designed to exceed the winter range of most of these EVs, all of which could easily make the usual route in winter on a full charge. The discrepancy in times stems from the difference in size of some of the batteries. This meant some vehicles travelled a lot longer (and farther) than others.
Unfortunately, at least one TV report I saw framed the test as an EV “Will I make it on a full charge?” mystery, before showing the Kia EV6 being hauled onto a flatbed.
Umm, no, the plan was for the vehicle not to make it. If it had made it, as the Chevrolet Silverado EV did, it would have been obliged to loop around our destination hotel until it finally ran out of electrons.
While this report covered details of driving from Ottawa to Mont-Tremblant, it didn’t state the official distance of this CAAplanned route, or any mention at all that we were taking a route more than 2.5 times the usual distance from the nation’s capital to the mecca of Quebec ski country.
The CAA organizers made a few other requests (as well as the stipulations that we stick to our assigned route and to speed limits). We were to keep auto climate controls set to 21 C at the lowest fan setting, no cruise control, no extra regeneration modes and no over-or underaggressive driving styles designed to extract more distance (so called “hypermiling”). Not even heated seats or steering wheel were allowed.
Driving no more than five over the limit did feel like hypermiling often in the superquiet Ford F150 Lightning Lariat ER (extended range) I drove. It was one of only three vehicles to slowly roll to a stop once it hit a zero per cent charge. The Hyundai Ioniq 5 and Kia EV9 were the other two with no “reserve” electrons.
But, if those two were anything like the Lightning, that last one per cent lasted much longer than the closely watched percentage points just above it. Others lasted between four kilometres (Volvo XC40 Recharge) and 28 kilometres (Silverado EV and Honda Prologue) beyond zero per cent.
While most of the 14 EVs started fully charged, the two electric pickup trucks did not. My Lightning started the day at 89 per cent charged, while the Silverado EV started out with the lowest state of charge of the day, at 73 per cent.
This was not done on purpose, but happened due to a combination of much larger batteries in the EV pickup trucks than the others, plus slower overnight charging speeds than expected in subzero temperatures using 240volt Level 2 charging. As with all such realworld tests, there will always be unexpected variables that come up, but the CAA range figures for these EV trucks are still instructive.
As the Silverado EV was 73 per cent charged, the CAA calculated what 73 per cent of its official 724kilometre range would be (roughly 529 kilometres), then compared its achieved winter driving distance to its calculated “official” figure, then did the same for the electric F150.
This made it even more remarkable that it still managed to travel the farthest of the entire group, at 456 kilometres, thanks to its massive battery, rated at roughly 204 kW in usable size.
Which vehicle went farthest? Charged the quickest? And lost the least range in the cold?
The disadvantage to the Silverado EV not being fully charged was that the CAA couldn’t directly observe how close it would have gotten to its official 724 kilometres of range. But using the efficiency achieved over a roughly threequarter charge, it was calculated that it might have travelled only 14 per cent less than its official range, or roughly 623 kilometres in total on a full charge. This 14 per cent loss was tied for the best in the entire group, along with the Polestar 2, a fourdoor Tesla Model 3 rival that’s much more efficient overall than the Silverado, but, of course, has a much smaller battery.
After the Silverado EV, the five vehicles that travelled the farthest were:
Tesla Model 3 at 410 kilometres, but rated at 584 kilometres
Polestar 2 at 384 kilometres, rated at 444 kilometres
Kia EV9 at 349 kilometres, rated at 435 kilometres
Volkswagen ID. 4 at 338 kilometres, rated at 423 kilometres
The quickest charging EV of them all in the 10 to 80 per cent cold weather DC test was the Kia EV9, at 33 minutes, a surprising 10 minutes and 12 minutes quicker than the Kia EV6 and Hyundai Ioniq 5, respectively, and all of the 2024 models. (Only the Tesla Model 3 and the F150 Lightning in this test were 2025s.)
All of the quick charge tests were done at the same Electrify Canada location, one of the few in the country with four 350 kW charge ports.
The next quickest in this 10 to 80 per cent test was the VW ID. 4 compact SUV (34 minutes), and the Model 3 (37 minutes), followed by a slew between 40 and 45 minutes. Bottom of this list was the Toyota bZ4X, which came in at a painful 92 minutes.
The full results of the tests are at the CAA’s website, and are a valuable resource for potential EV buyers concerned about winter range. (Even if there are no photos of EVs on flatbeds.)
The goal was to check how the winter distances actually travelled compared to the official government range ratings given to the vehicles