Your father signed as co-signer to secure and guaranty the loan so he cannot be removed as co signer. So long as you make all of the paymetns for gas, repairs, insurance, etc., your father's decsion appears unreasonable. There may be reasons for his decision that we do not know about and they may be valid. But, you are an adult and should be free to move if you can afford to do so. Make a budget - what you earn; what you will be spending if you move out. Then, show it to your father and ask him to reconsider if your budget balances. Good luck. We all have to have co signers at some point in time when we're young. When you establish your own credit, things will get better.