Ariz. Rev. Stat. § 28-5805
B. Notwithstanding section 28-5801, the registering officer shall collect at the time of application for and before registration of the motor vehicle that is classified under this section an annual license tax of $4 for each $100 in value. The motor vehicle value is determined as follows:
F. For the purposes of this section:
2. "Motor vehicle" means a vehicle that meets the safety standards of the national highway traffic safety administration and includes: