When I ordered my first X in 2016, there were no inventory vehicles as they were still catching up with the custom orders. By the time I took delivery in September 2016, inventory with discounts actually started to show up. That was when EM told the public Tesla does not offer discount on ordered cars, only cars with miles get discounted (what is now known as inventory cars). A week or two later AP2 came out and I lost sleep for a night as I paid full MSRP for an obsolete car.
Since then I told myself if I was to get a new Tesla I’d get an inventory car, with discount, and with the tech I already know what’s on the car.
Fast forward to February 2018 I need to get a replacement vehicle. No inventory existed. I had to custom order. Although there’s some inventory cars available now, nothing matches what I need. Now knowing there’s MCU2 for my new car, I am even more hesitated to get an inventory without it.
There’s no right answer. It really depends what’s important to you. It is totally possible there will be new features only available for the new MCU2 down the road. We don’t know and Tesla probably doesn’t know either until they hit that roadblock. Do keep in mind the MCU is very old, almost ancient in today’s standard. It’s not like they’ve been upgrading the MCU in a yearly basis. It’s the same chip they used since day 1. Could the new MCU2 bring mobile device mirroring? New apps? Who knows? Whatever it is it will be much faster on the new platform, be it Firmware v9 or v10. This new platform could be with all the cars for the next 5 years.
Now if MCU2 is important to you and you still want a discount, the answer is simple. Just wait for few more months and there will be inventory cars with MCU2 for sale.