What happens if the buyer does not transfer the title after buying my car?

If the buyer does not transfer the title, your name stays on record as the owner, which can create liability for parking tickets, tolls, or accidents. In New Jersey, you can file a Seller's Report of Sale (Form OS/SS-7) with the MVC after the sale to establish a record that ownership transferred. Keep a copy of the bill of sale and the title transfer receipt for your own protection.