I agree with the other response. However, you should check the figures on your contract. Some disreputable dealers get extremely greedy. They occasionally run the loan using a much higher interest rate then indicated on the contract given to the customer. While this is totally illegal, the dealer seldom gets caught. 99.9999% of car purchasers just assume that the figures are based upon the interest rate indicated . You should take the time to check the figures. Use a calculator and an amortization table.
If the figures indicate that the dealer pulled a fast one, then you should schedule a formal consultation with a lawyer. A good means of obtaining an attorney referral is by contacting your State's bar association or your local county bar association. They probably have a web site and charge a nominal fee for the referral. Most attorneys either provide a free initial consultation, or charge a nominal fee.
Good Luck, Elliot Jay Goldstein (Attorney with offices in Tampa and St. Petersburg)
The above information is provided as a courtesy, without any consideration and without knowledge of the specific facts. Do not rely on this information. Seek a formal consultation with an attorney.