This user's experience…
This user's experience definitely doesn't line up with mine - and I live in Calgary Canada. I drove my 2025 Ioniq 5 251km (155mi) in -16C (3F) and used a bit less than 70% of my battery capacity for an estimated maximum range of 360km or 220 miles. That was highway driving at night - pretty much worst case conditions for an EV.
I left it parked for 36 hours in that weather and SOC dropped 2%.
I regularly see temperatures like those reported and don't have a home level 2 charger. I just plug into a block heating station at home and get a toasty warm car before I leave for work without drawing on the battery.
My power efficiency is then better than that highway road trip regardless of temperature because I'm getting regenerative braking and my car is topped up by the time I leave work.
No standing in the cold tanking up, no getting into a cold car. It's MORE convenient IMO.