I have an Exi and have been driving my car since 2006. I have put almost 240k on the oddo now. The car has reasonably good low end torque and so gear shifts can be managed easily at or around 2000 rpm which results in good fuel average. Besides that I drive with a light foot and seldom push my car above 4k rpm.
For the last 5 years, I have almost always auto-filled it, I reset the trip meter to 0 and drive from full tank to empty and then repeat. In summers I get 11+ while in winters its around 12.5. The tanks has capacity of 42 L and the reserve in my estimate is 5 L. Mostly my refills are at or around 34-37 L and I cover around 410-420 km. I have been getting my fuel from the same pump (Hascol Lahore Cantt near Mall of Lahore) in Lahore city driving for the last 5 years. My commute is usually Cantt to Gulgerb in office rush hours.
on long routes if I keep the car at 120 then the average is abysmal, 13.5 max.
but if i keep it at 100 then i get around 15.