Car dealers have fallen on hard times. Call the dealership or others and ask them. Do you havea job? Try to get one of your parents to co-sign the loan or borrow the money from someone and pay them vack.
I got a loan when I turned 18, with no credit, by having a co-signer. I imagine you could get a loan, but your interest rates would be higher than those of someone with a proven history of making payments.