Is there much difference between evo 250’s over the years 2012-2016? I’m not talking about looks but more like power delivery/reliability etc or are they all the same?

13 had the new frame. And by 16 they changed enough that it was better.

2012/13/14 would sometimes jump out of first and/or second gear, mid section.

Not sure if the later ones still do it, as I no longer ride Beta.

 There was a tech bulletin out on the `13 about that. Can`t remember the particulars. I rode 248 sections last month and only once had a missed shift. That was out on the loop. Then again I am one of the Neanderthals that have been running ATF in my Beta`s for thirty years.