So this morning I had the car maxed out to 100% (Hadn't done it in weeks), at -7C it stated the range was 335 Km. I did 71 Km going to and back from work, getting a good deal of traffic going (Good for recapturing energy) and a bit more decent highway speed coming back, but with some stretches of traffic too.
Since the car was plugged in the morning, I used that to warm it up to 22 degrees, but then lowered that to 18.5 and used the Driver Only mode. I drove it in Eco mode and i-Pedal (Except on the highway where I set it at level 3).
When I came back home, the car stated it had 80% battery and 295 Km of range left, my return trip was using around 24 Kw/h. So it used 40 Km of range on a 71 Km trip, not bad.
I think the recent snow storms where I spent more time warming up the car while cleaning it than actually going anywhere made it rather pessimistic in its guesstimate, but I'd rather have that than too optimistic and end up stranded...