Optimus, thanks for your comment. This explains me much, but I'm also little bit disappointed to Audi's solution for this. Was hoping it would work better.
Anyway, I have quite optimal route from home to work, and av consumption has been now 4.9 litres per 100km (board computer), but in real life a little bit higher.
If only viewed for individual drive to work, it is around 4.3 litres but this requires very gently pedal and optimizing. And trying not to be an obstacle for other drivers 😁