From what I understand, the 17 Navigator will be the same vehicle as the 16. I was hoping to trade up to a 17 but there is no reason to trade as I would be getting the same basic vehicle with just a different engine. If they had the heated steering wheel and adaptive cruise control I might have considered it but it's not an option on the 17 expedition so doubt they have it on the 17 Navigator as its basically the same vehicle.