I think that my longest period of time, keeping a car has been about 10 years. It was a brand new light green, Honda Accord. It ran great for most of that time. Then after I had put about 120,000 miles or so on it from traveling on my job, different things started to go wrong and I sold it. I saw it in a nearby neighborhood, and thought to myself that the person who had it, would more than likely put in new parts and get another 100,000 miles out of it.