Selling a used U.S. car to a Canadian is not a simple process. There are a lot of mandatory procedures and required documentation, so you have to make sure you do your due diligence before exporting. The export of motor vehicles is regulated by the U.S. Customs and Border Protection (CBP), which requires you to submit the export documents at least 72 hours before the vehicle is exported. The documents have to be submitted to the port of entry from which the vehicle will be exported.
If the vehicle you want to sell is titled in the United States, you have to provide a Certificate of Title, or a certified copy, if you can't provide the original, along with two copies of the original Certificate of Title or the certified copy of the original. If you want to export your car through a land border port, you must take into consideration that you have to do on a workday, since these ports don't process car exports on weekends.
If there is a lien on your vehicle, or it's leased, you have to provide U.S. Customs with a document that is signed by the lienholder or the owner of the leased vehicle, stating that it may leave the country. The document has to include the Vehicle Identification Number (VIN) and the lienholder's contact information.
For vehicles that don't have a Certificate of Title, or have a junk or scrap certificate, you have to present either a bill of sale, a sales invoice, or any other document that can be used to establish ownership. You have to present the original document and two copies. Additionally, you must provide Customs with a document that proves that the vehicle you want to export is not stolen.
There are lots of used cars websites in Canada, such as monsterauto.ca, where you can find various types of used cars, as well as new vehicles, and it provides you with tips on buying and selling used cars.