Good to have you here in New England Scotty.
We have a 2012 Prius with about 200,000 miles. I figure the engine starts and stops at least 10 times more often than a traditional gasoline engine. Since starting an engine is responsible for most of the engine wear, why hasn't my Prius engine worn out from all the extra starts?
Because they were designed correctly by Toyota they have stronger bearings stronger Pistons better cams and the whole thing is not started and stopped by a normal tiny 12 volt starter it is done through the gigantic generator electric motor which operates entirely different than a conventional Bendix starter
Just my guess, but maybe Toyota engineers designed it withe the stop/start cycling in mind. They are prone to do those kinds of things.
Maybe the electric assist of the hybrid is taking a substantial amount of the load off the engine, too.
