Some websites that provide resources to determine the trade-in value of a used car include KBB.com, NADAGuides.com, Cars.com, AutoTrader.com and CarGurus.com. Resources such as these allow users to input year, make and model, equipment package, mileage and condition to determine the trade-in and potential resale value of a used vehicle.
Cars.com allows users to get a range of trade-in values for their vehicle and provides options to immediately begin the selling or trade-in process. Vehicle information can be shared with dealers or buyers to provide guaranteed quotes within four business days. KBB.com, Kelly Blue Book's online resource, provides users with a range of prices depending on the condition of their cars.