RCW 46.37.550: Odometers—Selling motor vehicle knowing odometer turned back unlawful.

It shall be unlawful for any person to sell a motor vehicle in this state if such person has knowledge that the odometer on such motor vehicle has been turned back and if such person fails to notify the buyer, prior to the time of sale, that the odometer has been turned back or that he or she had reason to believe that the odometer has been turned back.