Anyone know what the time window was for the unicorn models. They had free supercharging (by referral), grandfathered free unlimited data, MCU2
Those cars didn’t have MCU2 though. I don’t know that a car rolled out with everything the OP is asking about.
March 2018 and above models, the S I purchased came with MCU2/unlimited supercharging and data access/AP 3.0 (Upgraded)/Bio Filter. However, the new refreshed model s looks tempting but would be a bit ridicules to have two variants of the same car. I doubt I will consider selling the 2018 due to all the perks which will lower the total cost of ownership over the life time the vehicle.
The term "unicorn" doesn't specifically mean that exact manufacturer window you're talking about. That's not to say that it can't but if you say "I'm looking for a unicorn" nobody knows you mean exactly that timeframe car. Some will call that group of cars a unicorn and it's not wrong. Others will label the stealth M3 as a unicorn. Others still label cars like the P85D w/Ludicrous & Performance Plus suspension as a unicorn. None of them are wrong, especially if they're loaded and a desirable color combo. In most automotive circles a "unicorn" is a label given to a rare combination of options, color combo, production numbers, etc. I see people form time to time say "I'm looking for a unicorn" which isn't specific at all. Just trying to clear up some confusion I've seen. The car you describe would likely fit into a unicorn category but just be aware that there are a handful of categories within that "unicorn" label. It's kind of like saying "I want a Tesla" where you have different models under that label. They're all Teslas but a Model 3 isn't a Model X.
The later 2016 with AP 2.0 but MCU1 up until Jan 15th 2017 is correct... as they had free SC and connectivity... what makes for a unicorn is that the original owner purchased FSD. Now, they had to redeem the FSD, at which point Tesla would put in AP 3.0 and maybe MCU2. If still only MCU1, $1500 (or 1500€) is a small price to pay for that upgrade with such a unicorn for a Model S/X. The thing is, the original owner MUST have redeemed the FSD. If they purchased it, but never redeemed it, policy is that Tesla will only redeem it for the original ownerc, so if they are selling and haven't had it redeemed/upgraded yet, make sure they do before the handover (before you purchase), because Tesla won't for you as the new owner. As far as the best rarest most vauable combo, I would say a late 2016 Model S/X with free superchargig and AP3.0 FSD and MCU and connectivity is the best of all worlds and extemely rare, making for a newest tech car at a great price and free juice forever. Just not the fastest charging speeds anymore.