Originally Posted by The Weapon

I don't know about that. They always advertise that you don't pay City Sales Tax at our Automall because it's in the County versus City of Tucson Limits.

ORGANIZATION SALES TAX RATE TOTAL SALES TAX*
State of Arizona 5.6%

Each district has their own rate depending on where you purchase items.
Pima County RTA 0.5% 6.1%
City of Marana 2% 8.1%
City of Oro Valley 2% 8.1%
City of Sahuarita 2% 8.1%
City of South Tucson 2.5% 8.6%
City of Tucson 2% 8.1%

I know a few family members that purchases cars outside the state like Oregon because they don't have to pay sales tax on cars.