2013 Double Upgrade Car Rental codes
These all appear valid and to work, most came from rental sites themselves
Some may require "present coupon at counter" but that has never happened to me. Input the below codes on the rental car websites in the respective input areas on the site.
AVIS – CostCo One-Class upgrade and 25% off base rate
ID 7014627 , Coupon Code AU2291VYT
BUDGET – Double Upgrade and 20% off base rate
Offer Code/”BCD Code” U109200 , Coupon Code UUGZ011
For “La Quinta Inn customers”
NATIONAL – Double upgrade
Coupon ID NU3210FPI
HERTZ – USAA Double Upgrade Discount Code 77694 , PC Coupon 159530