I switched from a 05 rage to a 09 nytro xtx. My mileage was either the same or slightly better with the nytro until i started to really learn to ride this hard and got addicted to this things thottle then mileage went to slightly worse but i sure am having way more fun, i used to struggle a little to keep up with the others in my group (almost all are 10 to 20 years younger) now i have this really dialed in and i find myself waiting we have a rush, an xp, a rev, a few switchbacks, crossfires, ect. Hopefully this helps.