Legal analysis: If the loan has been paid off, the car can be traded. But if the car is still in the mortgage, it can't be bought or sold. This is because the car bought with the loan has been mortgaged in the lending institution. If the car loan has not been paid off, the mortgage registration cannot be revoked. Cars without cancellation of mortgage registration cannot be transferred, so naturally they cannot be bought or sold. If the car buyer is willing to pay the car purchase price to the owner of the car loan to repay the loan, he can apply for cancellation of the car mortgage registration and handle the transfer formalities after paying off all the car loans. Or you can borrow money from friends and relatives to pay off the car loan before buying or selling.

Legal basis: Article 3 of the Notice of People's Republic of China (PRC) on Loading Financial Functions into Social Security Cards: The cancellation of the cards is completed in two steps. Cardholders first go to the social security department to cancel their social security applications, and then go to the cooperative bank to cancel their financial applications with the notice of clearing accounts issued by the social security department. The cooperative bank will recover the card and complete the whole process of card cancellation. The human and social departments and cooperative banks should take measures to ensure the synchronization of card cancellation information.