Selling a used car in the Philippines starts with preparing complete documents, including the OR/CR, valid IDs, and a notarized Deed of Sale. Once a buyer is found, both parties must ensure there are no encumbrances, unpaid traffic violations, or LTO alarms that could delay the transaction. After payment, the ownership transfer must be processed with the Land Transportation Office, where the buyer registers the vehicle under their name. Completing the transfer is crucial so the seller is no longer legally responsible for the car.