I am a bit OCD about my vehicles...the Rivian has been mostly trouble free, but I had them address a couple of issues that bothered me. Transitioning from conserve (front motors only) to all purpose (all 4 motors) I heard a clunk in the engagement.. they replaced the rear differential. I had them replace front suspension with updated suspension as front shock lost a little pressure when parked for two weeks. Only other service was updating powered tonneau with upgraded 2 motor system. Rivian Service is extremely responsive and want to ensure their product is 100%. Never had a mechanical failure, just annoyances that they decided to replace the parts.