I was thinking about how in the Bayverse the Autobots kill named Decepticons all the time, but in the cartoons when we get a death it's normally an Autobot getting killed and the closest I can remember to Bots killing Cons (aside from cannon fodder) is the Cons getting severely damaged in the '86 movie and then saved by Unicron who reformatted them into Galvatron and his cronies.

So outside of un-named Insecticons, Sweeps, Vehicons, etc, how many Decepticons have actually been killed by Autobots/Maximals over the years in cartoons?