Nothing? Not at all? Not a single aspect? Aha! That's why you didn't like it! IMO, the 6-seater is better. Not only do you have space between the seats in the middle row, but the middle row seats can go way forward and make it very easy for full-sized adults to get into the rear. They even put the switches to put the middle seats forward on the outside (door side) of the seat backs at about shoulder level (of a seated person) so you don't have to bend over to move the seats forward to get in the back. FWIW, the weekend I had rented the X, my parents rode in the third row, and had no complaints. They're 5'11" and 5'8". For some reason, they didn't do this with the 7-seater. Not sure why. Wow... Those are huge positives for me, and I think for most people. One of the reasons the 3 and S both come with all-glass roofs now is the huge positive reaction that Tesla got from people over the X's windshield. But, since you were in the back, I can see how you might not have seen that. Not true at all! The falcon wing doors are designed to take as little room as possible to the side of the car when opening up. This guy shows that a little over a foot between the cars is enough to open them (jump to 3:08): True! I did that once - We had to go to a rehearsal dinner in a very crowded downtown spot, and the only parking spot I could find was in a municipal lot, and it was only open because the cars parked on either side were close to or over the line and nobody could get in. So, I pulled up next to it, said "everybody out!" and hit a button and the car pulled into the space perfectly.