"Salvage vehicle" means a vehicle whose certificate of title has been surrendered to the department under RCW
46.12.600 due to the vehicle's destruction or declaration as a total loss or for which there is documentation indicating that the vehicle has been declared salvage or has been damaged to the extent that the owner, an insurer, or other person acting on behalf of the owner, has determined that the cost of parts and labor plus the salvage value has made it uneconomical to repair the vehicle. "Salvage vehicle" does not include a motor vehicle having a model year designation of a calendar year that is at least six years before the calendar year in which the vehicle was wrecked, destroyed, or damaged, unless, after June 13, 2002, and immediately before the vehicle was wrecked, destroyed, or damaged, the vehicle had a retail fair market value of at least the then market value threshold amount and has a model year designation of a calendar year not more than twenty years before the calendar year in which the vehicle was wrecked, destroyed, or damaged.