I have a 99 and it gets about 12 mpg, when riding it like a sane person. If you constantly hold it to the bar it will get 7-8 mpg. My sled has been reliable other than the motor. You have to put pistons in it every 3000-3500 miles or else you are looking at a burn down. The coupler blocks will do nothing to stiffen up the ride. They will how ever keep the front skis on the ground as that sled likes to lift the skis when you go around a cornor.