If it last less than the warranty then it will be repaired and should be expected to last that amount of time again. It will last longer with good care, I assume. Not using it in shocked pools, removing it from the pool and storing it correctly etc.
I got a brand new suction side cleaner when I bought my home, it lasted around 16 months before I began replacing parts. Although I only invested around $150 on replacement parts, one of those pieces went out again in a couple weeks.
I'm Worse than that was the amount of times I had to clear out my pump impeller, the number of times I am replacing o-rings on the pump, cleaning out the pump filter, and all the times I had clean the pump basket and release air repeat over and over again.
I got tired of it all, and have rarely touched the pump this last month from having the robot.