I’ve seen a few posts similar. Figured I’d share mine. July 18 built P3D with just over 12k miles and has been in my possession since end of March (was a showroom demo).
Check out my graph, seems like a pretty steady decline started around 4500 miles (sitting at 290 now). Unless this range loss slows down, my max range will be less than 250 before I hit 36k miles. Factor in Dual motor, 20” wheels, cold weather and a realistic range will be closer to 150. I really hope something changes.