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