Given the situation that you have now found yourself in with respect to the improper designation of the odometer of the car that you traded in, the following are ways for you to try and get the proper paperwork in order:1. go to the dealership where you traded in the car and complete new paperwork showing the correct mileage of the car that you traded in and make sure such is submitted to your state's department of motor vehicles;2. if the dealership will not assist you, go to your state's department of motor vehicles to fill out and submit the proper paperwork regarding the car you traded in;3. if option # 2 does not help, consult with an attorney that practices in the area of automotive law to assist you in your endeavor.