What does a bus use city center at 100 km?

Average city with 100-200000 inhabitants used during the day in the city area without continuous permanent bus lanes e.g. in cities such as Essen, Heidelberg, Bremen or Nuremberg? with 0.3 liters per passenger etc. I can do nothing… best would be an answer directly from a bus driver… The only number I have found so far was with MAN there was something from 60 liters to 100 km and that was then already such a brand new space floor with hybrid technology… That would then, however, b and how big are the tanks at the things? cool would of course be comparison numbers of “Normalbus” and “Ziehamonika” now I’m curious if there is someone here who knows something like that… Would I be happy P.S. (no I don’t want to tap a city bus, had to leave my apparently too slow driving anyway and don’t want to have it again)