Used car values are extremely subjective. One person’s treasure is another person’s junk. Value varies with condition, regional popularity, and availability. Naturally, you’ll want to know your trade-in’s worth before you sell. Reference guides like Kelley Blue Book, the National Automobile Dealers Association (NADA) Official Used Car Guide, and similar cars in the classifieds are a good place to start.

Typical example form Kelley.
