In my search for a P100D with ventilated seats, I noticed that there is no description of the feature in the spec sheet, just "premium interior". This feature is listed on cars with and without the new ventilated seats. After digging through various inventory search tools, I noticed that the pictures changed around the VINs ending at 260xxx. After that and they likely have the ventilated seats, prior to that, they do not. Based on EV-CPO.com - Tesla New, Used, and CPO Inventory Listings the change happens between VINs 260127 and 260449 The pictures between the two models are nearly identical, except for the rear seat belt being slightly lifted from the back seat on the non-ventilated model.