I'm glad to see the 42 mpg rating is in question. I ride ~52 mi to work every day at about 90 mph in so cal... usu in 5th gear ~7k. I am getting 30 mpg flat. Some days I even kick it into 6th gear as much as possible and go easy on the throttle and I gain one or two mpg. My bike is an '09 bought in October 2009. I now have 12.5k mi on it and have done all the oil changes early. Idle is a little low, ~950. I bought the plugs, but didn't bother changing after reading other posts. I was already skeptical about plugs being changed out every time you fart. So in short... WTF? Was 42mpg a figment of some sort?