If its breaking down on me, 3 years. If its holding together well 8-10 years. I'm closing in on 4 years on my current DD, and I see it going another 2, mainly because I dont need a SUV any longer because I dont tow motorcycles. At 26-28mpg, Im not really getting any benefit of the SUV ability. Im looking at getting that next Ford Fusion Hybrid which gets mid 40s.