In the early days of Tesla Model S, they strived to get people back on the road quickly, and they replaced entire subsystems when they didn&#x27;t really need to. If you search the news group &quot;tesla motors club&quot;, you&#x27;ll find discussion of how telsa found a number of tiny tweaks that they could use to adjust some of these minor issues. They were not drive train failures really. I have driven about 40k miles, no drive train failures (anecodotal, blah blah).