My '09 with fi averages 49mpg (U.S.). As high as 55 with no luggage, cool day - cool for south Texas as it was below 90. I tour a lot like Sissy Marty who travels with a mate. I ride solo, frequently with topcase, saddlebags and bedroll onn passenger seat.
I go S'camping - scooter camping - so I carry a tent, stove, food, and of course more clothes and heavier sleeping bag in the winter. It is a lot of fun. Going on a 4 day adventure within the next week.