Can you get a car loan if your still in debt & have bad credit?

My cousin is in debt he owes about 4000-5000 & his credit has dropped to somewhere in the 500-520 area, & plans to get a car loan for about $10,000-$13,000 because he found a great job that & will pay him enough to be able to pay off his debt in 4-6 Months. His "Boss" told him that he needs a car or a 100% reliable way to get to & from work. My cousin asked his parents if they would get him a cheap used car but their crazy cheap & said no but that they would cosign or if he is denied that they would just get the loan in their name & he would have to pay for everything. Is this a smart move, even if the job pay really well?
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I'm not sure what you mean when you say that his credit rating has dropped? What happens when a person goes for a loan, a credit check is conducted. If that person has any collections or defaults against their name, the application will be carefully reviewed. The lending companys look at how stable you are, i.e how long you have been at your address for, how much equity you have, i.e a house, and how much money you are bringing in - your income - and how much debt you have that is going out of your pocket each week. Loan companys do not want to lend their money to a person if they are too high risk to the company - i.e, if the person doesn't look stable. Hope that helped.
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Have you looked at the bus schedule? They're quite reliable, trust me. Although his commute may take a while, he'll only have to do it for about 7 months. Then he can get a clunker car with cash and never have to worry about a car payment ever again. That extra money can go towards securing his financial future.