If you are thinking about trading in your car or perhaps selling it in the paper, then like most everyone you are wondering what's my car worth? Interesting enough over a person's lifetime they will spend more money on buying automobiles than real estate. However, unfortunately, while real estate will usually go up in value, when you purchase an automobile it's a given that the value will indeed go down. For this reason, you really want to get top dollar anytime you trade in or sell your car out right or other vehicles you are going to be selling.