I have GLI 2014 late model with odo on 50,000/- kms a perfectly maintained car. I get between 13 to 14 km/ltr within city, my route is not highly congested, in most of the route I can manage speed of 60 kms.
Two weeks ago I went out of the town and drove around 550 kms one side, got average of 17 with speed between 80 to 110 maximum, mostly drove at or below 100.
Two months ago I went on same route but was in a bit hurry so drove the car on higher speed between 100 - 140 and got average of 11 kms/l.
All the averages mentioned above, I got with A/C on