I'm 18 and buying a car. I am working part-time, as I'm in college, and can not get a co-signer because of their bad credit. I am literally on my own. My uncles are mechanics and are willing to look over anything I'm considering buying. I am just looking for something that'll last a year, so obviously used. I am not going to be approved for a loan but need a car to be able to work two jobs or get a better job elsewhere to help pay for school, something I can't do because I am relying on public transportation currently and it doesn't go where I need it to and when it does, not at the times I need as well. So I really need this thing to help me at least get another job as a delivery driver or something. I am under my granmas insurance since I was driving her car back home, so I THINK I can transfer it over. I also make about $400 a month (taking out $50/check for food) because I get paid every 2wks and that's about $400 monthly. $650 if I'm lucky. So I think I can pay $200 of my check for a used crappy vehicle. Any advice or am I better trying to pay this college with the little money I'm making as is?

Note: I am taking out a loan but I'm desperately trying to get another job to avoid taking out the unsubsidized one that will, although cover my bill, really screw me over.