I've been looking diligently for a inventory new-MCU 2018 2018 MS P100DL. However, my owner advisor found me a fully-loaded inventory 2017 MS P100DL with a $32k adjustment (8900 miles driven already), bringing the total price down to $116,500 before fed/state tax credits. That's actually in-line with used 2017 P100DLs I've seen, and similar to the used values in Kelley Blue Book for a car with similar miles. I placed a deposit because it seemed a really good deal, even though it had the old MCU. I'm supposed to be picking up the car tomorrow but now I'm having second thoughts. Getting an inventory 2018 with the new MCU and higher miles driven would cost $7k - 10k more (more likely 10k) for cars with nicer adjustments. I plan on keeping the car 7-8 years. Considering that I'm keeping the car for 7-8 years, am I better off paying up to $10k more for a 2018 to have the new MCU? I feel like I may regret not having the new MCU if I keep the car so long. What if only certain v9+ feature end-up only being available on the new MCU? On the other hand, that's an awful lot of money to have a snapper MCU - and it's not like folks interact with the MCU a whole lot. I'm pulling my hair out on this one. I know Tesla comes out with updates almost weekly, and the car is still just as good now as it will be next year. However, cars with the new MCU are already available for purchase, and I haven't purchased a car yet. Could folks provide their thoughts? Should I go forward with the delivery tomorrow of the inventory 2017 car and feel happy with the great 32k adjustment, or pay $7k - 10k more for a 2018 inventory car with the more "future proof" MCU?