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