I've been keeping track of my fuel economy over the past couple months.
I've been driving my 1990 325i (see sig for mods)
I've been commuting from Guelph to Mississauga so pretty much half my time is spent moving at highway speed, and the other half is spent sitting in traffic on the highway or in Mississauga (aka infinity L/100km). My driving is typically spirited as well, rarely conservative.
Over 9547km I've averaged 9.17L/100km