Legal analysis: If the truck loan is not repaid, it is ok to hand over the car to the loan company to pay off the debt. But it also needs to go through relevant legal procedures. The truck must be evaluated by an appraiser, and the relevant procedures for the new car account are handed over to the loan company, which will now auction it. If the truck doesn't sell enough money, make up the rest.

Legal basis: Civil Code of People's Republic of China (PRC).

Article 674 The borrower shall pay interest at the agreed time limit. If the time limit for paying interest is not stipulated or clearly stipulated, and cannot be determined according to the provisions of Article 510 of this Law, if the loan period is less than one year, it shall be paid together with the loan; If the loan term is more than one year, it shall be paid at the end of each year; if the remaining term is less than one year, it shall be paid together with the loan.

Article 692 The suretyship period is the period during which the surety assumes the suretyship responsibility, and may not be suspended, interrupted or extended. The creditor and the guarantor may agree on a guarantee period, but if the agreed guarantee period expires before or at the same time as the performance period of the principal debt, it is deemed that there is no agreement; If there is no agreement or the agreement is unclear, the guarantee period shall be six months from the date of expiration of the main debt performance period. Where the creditor and the debtor have not agreed or clearly agreed on the time limit for the performance of the principal debt, the guarantee period shall be counted from the date when the grace period for the creditor to request the debtor to perform the debt expires.