Precise values of a used motorcycle fluctuate widely based on the model, mileage and condition of the motorcycle in question. Newer models in excellent condition have values close to 90 percent of their retail price as reported by Kelley Blue Book, while older motorcycles are worth 50 percent or less.
Almost any motorcycle depreciates quickly in value once sold as new, according to motorcycle enthusiast site MotorcycleGiftShop's buying guide, and continues to depreciate as time goes on. The only exceptions to this rule are motorcycles with collectible value, such as limited production models and vintage motorcycles, that increase in value due to their rarity.
A late-model motorcycle in excellent condition is valued at a significant portion of its purchase price even on the used market. As of 2015, for example, a 2014 Harley-Davidson Electra Glide Ultra Classic is valued at $21,395 by Kelley Blue Book. This value is 92 percent of its suggested retail price of $23,249.
Older models typically retain significantly less value. Of the 27 motorcycles included in the used bike buyer's guide compiled by enthusiast website Sport Rider, the average asking price for most older models is between 25 percent and 50 percent of the motorcycle's initial retail price.