Bill of sale includes vehicle type, make, model, year, odometer reading, vehicle identification number (VIN) and purchase price. Forms on this website are PDFs with fillable fields.Forms should be downloaded to your computer before filling in the fields. These Bill of Sale forms are available in Spanish and designed for use in all states. Form REG-1, Illinois Business Registration Application, to us at the address on the form (Form REG-1 is available on our web site as a fill-in and savable form. A bill of sale (depending on where you're buying from); Odometer disclosure statement. An Illinois motor vehicle bill of sale documents the purchase and sale of a motor vehicle between a private seller and buyer in the State of Illinois. For both new and used vehicles, you must also have a Bill of Sale. • Recent vehicle registration ID card you are transferring license plates. The All Auto AS-IS Bill of Sale form for use when selling an automobile "AS IS" without any warranties as to its condition.