A Pennsylvania vehicle bill of sale is a legal document formalizing the sale and purchase of a motor vehicle between a buyer and seller. A bill of sale is recommended if you're buying a motor vehicle, boat, or livestock.The buyer and seller should meet at a notary, tag service, or motor vehicle dealer to ensure the title application is completed correctly. 1. Enter the Buyer and Seller's details. Follow our comprehensive guide on how to make a legally binding Pennsylvania purchase agreement using our customizable template. How to fill out the Pennsylvania Motor Vehicle Bill of Sale Form? 1. Write the vehicle details such as make, model, year, and VIN. 2. See our free, printable Pennsylvania Vehicle Bill of Sale below. It's available in both PDF and Word formats. This form is used to obtain a Pennsylvania Certificate of Title for vehicles not currently titled in Pennsylvania, or which were repossessed (1.