Our 2025 Ioniq 6 gets 530km in summer, but about 350 (or less ) in winter. Drop that by about 60km if the heat is on full.
The real problem is that charging stations are sometimes 100km apart, many "pumps" are not working, most max out at 50kW (our car can handle up to 350kW), and because of all these factors, you might have to wait an hour or two for other cars to finish before even starting your charge, and then charging can take 90 minutes.
Cold weather like we've been having (-25°C or colder some nights) makes this even worse.