Finding the right car under $500 down in Rock Island, IL is just a few simple steps away. Each used vehicle in Rock Island listed can be bought with $500 down. Buy a car with 500 dollars down in Rock Island and get an auto loan with $500 down at a single convenient Rock Island Illinois location. Our Davenport-Moline-Rock Island area used car dealers offer you the best chance to finance a used car in Rock Island with a low down payment and a monthly payment that fits within your budget.