Until EV go more mainstream [ which they slowly are ] , for a casual observer to buy a Tesla will be a huge leap of faith. Casual conversations without AP being mentioned is to be expected. Once buyers are close to making a deal , reasonable ones will do some research i would assume , and then AP should come out as a huge part of Tesla.
The 5 seater MX are the ones most discounted on the inventory stocks , im sure for a reason. With the upcoming modelY 5 seat MX will take bigger hit.
The 90kW battery has had bad press. Also the real world mileage increase from a 75kW is only about 15 miles.
Now thats my 0.02 . I may be wrong.
How many Tesla buyers do you think know of the detailed differences between all the model/trim/option variations with Tesla? I don't know the answer myself. But, from my personal experience talking about my car to friends/family/neighbors/strangers, and if you visit a Tesla showroom, you will realize most conversations/buying decisions do not revolve around AP. Believe it or not, AP is not a big decision factor of buying a Tesla for the average person.
The 90D has a bad press on these forums, only, because the usable capacity is less than 90. However, 90 is still 15-20 more real world miles than the 75 and, more importantly, charges faster. Charging a 75 to the full capacity to get that maximum range will take forever, even at a supercharger. You don't need to go to 100% with the 90 to get the same range. The charging speed is a big difference. But, again, the average customer has no clue about these nuances unless they're a long-time regular on these forums.
l think we can agree, though, that most buyers will prefer a 90D over a 75D if they had the financial means. And it is the 5-seat 75D models that would depreciate the quickest.
When Tesla bumps battery capacity, the value of current cars will go down. I believe that will happen in 2019.
THIS. Regardless of everything said, I think this will be the biggest factor of prices. Does not matter whether you have 75, 90, 100, AP1, AP2, AP2.5.....the bigger battery will always devalue other trims when comparing the same model.