My 2000 Explorer with 49,000 miles needs a tranny at a cost of $3700 for Motorcraft reman with a 3 year unlimited mileage nationwide warranty. Some additional repairs, a new set of tires and alignment (which I already knew about) bring the total to $5500. This vehicle is gently driven, mostly highway miles, well-maintained and never needed any major repairs until now. The mechanic says the rest of the car looks in good shape and should last "quite a while", but I take that with a grain of salt as they are looking at losing a nice repair sale if I decide not to have the work done and get rid of the vehicle.
My question is, is it worth sinking $5500 into an 11 year old vehicle with low mileage? Being that almost all components of this vehicle are 11 years old (almost 12) what are the odds they will start to fail as well? Does age play as major a factor as miles?