I'm also interested in this question. The buttons for the falcon wing doors are one of the things I've also noticed. Not a big deal obviously but the newer button design is much easier for people to use/understand.
I think another difference is between leather or vegan seats. I believe the 2016 premium interior has leather seats while all the newer cars have vegan seats. I'm not sure how a big a difference this is.
Are the ventilated seats on all 2016 models or was it an option?
Ventilated seats was an option.
These are most of the changes from 2016 (pre-Oct 2016) to 2018 on top of my head:
- AP1 vs AP2.5
- MCU1 vs MCU2 (March 2018)
- Optional PUP vs standard on 2018 now
- Interior chrome trims become dark chrome (April/May 2018?)
- 7 seats 2nd row monopost becomes bench
- ghosting windshield on 2016 and not on 2018
- no more alcantara dash on 2018 (available for 2016 w/ PUP)
- 2018 has sensor inside falcon door speaker to detect people standing under the door
- front doors latch difference (though if failed in 2016 Model they will replace with the new ones)
- falcon door switch as mentioned, though will be replaced by newer style if failed or by request (maybe not free if by request, depends on your luck)
- gloss seatbacks vs matte seatbacks
- more shoulder room for 3rd row in 2018
- strictly vegan seats in 2018
- Steering differences (2018 on standard feels like 2016 on sport)
- "Model X" logo removed on falcon door ceiling (April/May 2018?)
- some interior trims no longer available in 2018 and new oak decor trim in 2018
- turn signal is louder in 2016
- windshield wipers sit lower in the hood for 2016 (hidden) and higher for 2018.