Considering the price of new cars now, and some used vehicles, If I were you I would not replace her. Especially since you have the lifetime warranty. I have heard a rumor from the dealer mill, @ some point you will reach a price point/work needing done, and Mama Mopar could buy you out. I am not certain on any of that, but we like the lifetime warranty package, and hope to keep our DD Citadel as long as possible. As long as a used one has not been totally beat on, I feel even a used DD can go for many miles. Keep good brakes, oil changes, and a decent set of tires, she'll run out good.