Avis is one of the world's leading car rental companies, providing businesses and impromptu road-trippers alike with a wide range of services at more than 2,100 locations across the globe. If you want to save big on your next car rental, check out our selection of 21 active Avis coupon codes and discounts for May 2017. Whatever the reason for your rental, if you use an Avis promo code, you'll rest assured knowing you got the best deal possible!