Budget Rival is a term used to refer to four car rental companies that offer competitive prices and services. These companies are Avis, ALAMO, Hertz, and SprinklesRentACar. Avis is a 4-letter company, ALAMO and Hertz are both 5-letter companies, and SprinklesRentACar is a 17-letter company. All of these companies offer competitive rates and services, making them popular choices for budget-conscious travelers.