NADA Guides is a resource that provides information on vehicle values, including cars, trucks, and motorcycles. It offers pricing data based on various factors such as make, model, year, and condition. This helps consumers and dealers determine fair market prices for buying or selling vehicles. In addition to vehicle values, NADA Guides also includes information on RVs, boats, and classic cars. Users can access detailed specifications, reviews, and historical data, making it a valuable tool for anyone involved in the automotive market.