Not much really , I have a 2014 Build date November 2014 , delivered Dec. 2014. I mean for the price ? Sure a brand new 2018 would be nice , but who will sell you one at this price ? Based upon our experience , this bike will have a SC ECU , and may need some other service updates like oil in air box fix and trans vent . No big deal. I have over 6k miles on my bike and expect to put many more on. If you want a Norton 961 , frankly this price is hard to beat even if the bike does need service. In my view a bike like this is a life long investment , you buy it , you love it and give it what it needs.