What are my chances of being accepted for car finance?

What are my chances of being accepted for car finance?
Added (1). I am currently a 19 year old student. I have a part time job where I receive approx. 20 hours a week, about 400 a month. I also receive a £5000 maintenance loan. Today, I applied for car finance on PCP for £114 a month with a £500 a deposit. I checked my credit rating, and it is 725, which is fair. I have 3 non-mortgage credit accounts which are all paid on time apart from one missed phone bill 5 months ago due to a dispute that was soon resolved. What are the chances of me being accepted?
Added (2). I also have a student account with a £1500 interest free overdraft. Does being in this overdraft affect me from getting car finance?

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