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