I’m making a “study” of my daily commute of 35km each way (37km the way back home). First thing noted is that a small difference on the altitude (75 meters on the 35km route) so far makes a 3 kWh/100km difference on one way vs the other.
On the same route, depending on the weather (this week is very windy and rainy) and traffic, I see a 3kWh/100km difference (the worst the longest in time trip, due to heavier rain and traffic), which means a 7km of total range.
So even same driver, same route, same target speed, you can have a significant difference. Comparing different drivers on different routes can drive us nuts.
I would just say that on very good conditions, not uphill at all, at 120km/h the car should be a bit less than 20kWh/100.
PS: it’s really funny to try to get the best range while beating the best average time/speed
