That's one of the bigger discrepancies I've seen, but quite a few people have seen this happen where the charge level is occasionally overshot. It can happen for a variety of reasons, the most common being temperature changes...not usually an issue in SoCal, though. The other main one is thought to be simply the BMS estimate of miles being off. I'd be curious what the percentage readout is.
I see you are in Barcelona. I replied in that other thread you linked about how North America uses the terms "Ideal" and "Rated" instead of Europe's terms of "Rated" and "Typical". I'm pretty sure everyone is using the lower more realistic value.Umm....
Maybe your car is also using Typical instead of Rated?
Perhaps different cars have different typical values?
Take a look:
M3 straight line in the energy graph shows "Typical" instead of "Rated"