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Do you absolutely need to get a car right now or can you wait a couple more months?
I only ask because you will probably get a better interest rate (and are more likely to get financing options) with a higher credit score
Do you have any active tradelines on your credit report now? Secured credit cards or rebuilder cards?
If you absolutely need a car then you can try CapitalOne auto or your local credit union but I will recommend working on improving your scores.