I wanted to bring a situation to your attention, report an incident and understand why model years 2012-2020 Tesla Model Ss have not been recalled for a defective drive unit. This is a known defect — known by Tesla. There have been no recalls for mine — VIN number [XXX] . On [XXX], my 2016 Tesla Model S suddenly lunged and jerked down to less than 5 mph from about 45 mph in 5-10 seconds as a result of a defective and failed drive unit, here in San Ramon , CA. NO WARNING. We forced the car to lunge and hop over to the median with traffic stopping, building up, honking, braking….truly a miracle no one got hurt. I later saw both front and back wheels turning in OPPOSITE directions, simultaneously, as the tow truck driver was pulling the car on his flat bed. The tow truck driver said he has never seen anything like this! The defective drive unit has been a known issue which they corrected in 2020. A Master Tesla mechanic states that this is not about IF the failure was to take place, but WHEN it was going to take place. Tesla refuses to own up to the problem despite emailing their Head, Tom Zhu. I came across this conversation on Reddit and it appears that a comment made by the Tesla mechanic below is relevant. They could have prevented this by recalling the cars and changing the coolant seal. Here is his quote: ‘Every single large Tesla Drive unit will fail unless it’s a recent revision U replacement (~2022 or newer) or has been retrofitted by a 3rd party. This applies to all RWD Model S made between 2012 and 2020, and all Performance S/X made until 2020. The coolant seal will fail and destroy the motor. This is not an if, but a when. If you have a car with one of these motors, there are a variety of 3rd party shops who can fix this issue forever for a lot less money than a fully dead motor. An attorney on this thread commented on a 2015 Tesla Model S: ‘This is a known issue with older Model S/X cars, yes. A 2015 is HIGHLY at risk of that. Also, a INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION