I thought resale value would be dependant on what people would be willing to pay for it. No point in saying the resale value of a 6 year old Corolla is $200 less than when it was new, because no one would buy it for that. If there are hundreds of Corollas on the market, than perhaps supply is larger than demand, which would drop the price so people buy them. Perhaps one of the guys who work a a dealership point that out, unless my "model" only applies to private sales?