Legal analysis: vehicle decompression is free. I need to handle it myself. Generally, you can decompress at the vehicle management office within 10 working days after the car loan is settled. You need to bring the following documents: the owner's ID card, the loan settlement certificate issued by the lending institution, the motor vehicle registration certificate, and the organization code certificate of the lending institution.

Legal basis: Regulations on Motor Vehicle Registration

Twenty-second motor vehicle owners who use motor vehicles as collateral shall apply for mortgage registration at the vehicle management office where they are registered; If the mortgage right is extinguished, it shall apply to the vehicle management office at the place of registration for cancellation of mortgage registration.

Article 24 Application for cancellation of mortgage registration (1) Identity certificates of the motor vehicle owner and mortgagee; (2) Motor vehicle registration certificate. If the people's court mediates, makes a judgment or orders to cancel the mortgage, the owner or mortgagee of the motor vehicle shall fill in the application form and submit the motor vehicle registration certificate, the effective mediation, ruling or judgment issued by the people's court, and the corresponding notice of assistance in execution. The vehicle management office shall, within one day from the date of acceptance, review the submitted documents and vouchers, and annotate the contents and date of cancellation of mortgage registration on the motor vehicle registration certificate.