Description: Enter this coupon code at checkout and get up to 30% discount on car rental base rates. See site for details. Avis: Avis is an American car rental company headquartered in Parsippany, New Jersey, United States. Avis, Budget Rent a Car, Budget Truck Rental and Zipcar are all units of Avis Budget Group. Avis Budget Group operates the Avis brand in North America, South America, India, Australia, and New Zealand. In 2011, Avis announced it was acquiring Avis Europe plc, which had been a separate corporation licensing the Avis brand.