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