This to me. One person could live in the San Diego region with little rain, no snow, and not baking sun so a 20 year old car could "look" pretty good. In a snow region and salt on the roads it could look "old" between 5-10 years same car. Both my Cougar and Mustang are 56 years old by the calendar yet don't look it and are completely reliable. So too the F100, the Polara, and soon Parklane when the rebuilt engine goes in. The 20 year old Focus and LeSabre "look" brand new and run that way.I have a 98 F150, 04 Escape, 09 Mazda5, 13 GT500 and 14 Armada. Half of those wouldn't have lived that long if they salted the rounds around here. So I think "old" would depend on the area.