I live in the snow (rusty car) belt. Very often age dictates the life span of vehicles, rather than mileage alone. My 2003 Sienna has 223,000 miles but lots of rust issues underneath. My 2014 Mazda 6 has almost 98,000 miles but looks almost new underneath. The difference is 125,000 miles but, more importantly, eleven years (winters) of snow and salt spray. I should hit 200,000 in about three more years, at which point my Mazda 6 will only be six and half years old. I am certain it will be way less rusty than my Sienna is right now. When you live someplace like where I live, after ten years you can expect parts to start rusting off of your vehicles (calipers, brake lines, fuel lines, radiators, sub-frames, control arms, engine mounts, exhaust systems, and more). If you are lucky enough to live someplace dry and warm then age is much less of an issue but still present as rubber and plastic parts age faster in hot climates.