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