Blue book value generally refers to the value, or worth, of a used car. There are two major "blue books" that people use to price new and used cars.
One "blue book" is KBB, an auto industry pricing guide; KBB stands for "Kelley Blue Book." The KBB pricing guide is used to determine the "loan to value ratio" primarily in California, as well as the 49 remaining states. We think the Kelly Blue Book is one of the best online providers of auto price values, and that's another reason why when you are researching auto prices, we provide their information for your review.