credit score car loan

Does anyone know the easiest way defianlty get a car loan with at least a 620 credit score?
Im looking for the place easier to seek approval for the dollar of 2500 car loan. I have a credit score of 620 and MI 19. I have credit problems and four cards with a total limit of $ 2500 in credit limit balances. so you only need to deal with some places almost guaranteed approval. websites and approvals would be appreciated.
Financing of cars is what I do for a living and your best bet is your own local bank or credit Union, as any vehicle that can be purchased for $ 2500.00 to be older and have more miles, then lenders will be more important in account.
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