No one outside of Tesla has useful, reliable data on this issue, not even Consumer Reports because their data relies on owner reports,mis not a random sample, and is not specific enough about how a drive unit "problem" or "failure" is defined. One person will call a minor noise a "failure" and another person will not.OK, lots of problem reports. But without solid data on how many DUs in the field are operating in spec, it's hard to put context on these numbers... from these anecdotes, I can't even make a broad-brush assertion about the trend line on DU problems. Up? Down? Sideways?
I don't know how to turn these reports into solid projections of pretty much anything other than... well... the issue is real.
Does anyone have better data
What we have on TMC are anecdotal reports that are not sufficient to draw any conclusion from beyond "Some owners are having a range of issues with their drive units." But that won't stop some people from drawing unwarranted conclusions.
We also have Elon's statement in the most recent earnings call that drive unit reliability has improved and that Tesla's goal is for their drive units to last one million miles. And in about a decade we will hopefully know whether or not that goal has been met.