1. You can contact the seller and negotiate a solution. Under normal circumstances, you can ask the seller to compensate for the loss and bear the loss of breach of contract.
2. The system of bona fide acquisition in civil law is not applicable to the owner who buys the mortgaged vehicle knowing that the vehicle is mortgaged, and the vehicle mortgagee has the priority to be compensated and can request the return of the vehicle.
3, can call the police, by the public security organs to investigate and deal with. People's Republic of China (PRC) Securities Law
Article 53 If the mortgagee is not paid off at the expiration of the debt performance period, he may agree with the mortgagor to discount the mortgaged property or be compensated with the price of auction or sale of the mortgaged property; If the agreement fails, the mortgagee may bring a lawsuit to the people's court. After the mortgage is discounted, auctioned or sold, the part of the price that exceeds the amount of creditor's rights belongs to the mortgagor, and the insufficient part is paid off by the debtor. Extended information: Mortgagable and non-mortgagable properties stipulated by law: Mortgagable properties in Article 34 of the Guarantee Law of People's Republic of China (PRC);
(1) Houses and other things fixed on the ground owned by the mortgagor;
(2) Machines, means of transport and other property owned by the mortgagor;
(three) the right to use state-owned land, houses and other fixed objects on the ground that the mortgagor has the right to dispose of according to law;
(4) State-owned machinery, vehicles and other property that the mortgagor has the right to dispose of according to law;
(five) the land use right of barren hills, gullies, hills and beaches contracted by the mortgagor according to law and mortgaged with the consent of the employer;
(six) other property that can be mortgaged according to law. The mortgagor may mortgage the property listed in the preceding paragraph together. Article 37 of the Guarantee Law of People's Republic of China (PRC) shall not mortgage the following properties: (1) Land ownership: (2) Land use rights owned by collectives, such as cultivated land, homestead, private plots and private plots, except those stipulated in Item (5) of Article 34 and Paragraph 3 of Article 36 of this Law; (3) Educational facilities, medical and health facilities and other public welfare facilities of schools, kindergartens, hospitals and other institutions and social organizations; (4) Property whose ownership and use right are unknown or controversial; (5) Property that has been sealed up, detained or supervised according to law; (six) other property that may not be mortgaged according to law.