5% to 7% is pretty normal for me - in both summer and winter. This is just leaving the car in front of my house for a few hours (let's say I don't want to park it in the separate garage).
It's not the end of the world for driving around town with less than my whole family (which is 90% of my driving) but it's definitely annoying to come back to a car with 50% charge and see it with 43. I imagine it would be terrifying for a 20 -> 13, especially with the lack of supercharging infrastructure where I live (Calgary).
https://imgdrop.io/image/IMG-2984.ADiI7
It's not the end of the world for driving around town with less than my whole family (which is 90% of my driving) but it's definitely annoying to come back to a car with 50% charge and see it with 43. I imagine it would be terrifying for a 20 -> 13, especially with the lack of supercharging infrastructure where I live (Calgary).