Hello, 4S shops can't operate like this, that is, you said to buy a car in full first, and then mortgage the car when the funds are difficult. If you want to buy a car first, you can apply for a loan from the bank when the funds need to be turned around. If the amount is not large, you only need to provide proof of assets, that is, copies of the documents of the house and car. If the amount is large, you can take the car as collateral, and the bank only charges ordinary interest. Another best way is to avoid troublesome procedures in the future and avoid paying bank interest in the future. You'd better buy a car by mortgage first, and there is still money left in your hand after paying the down payment, and 4S stores generally have a zero interest policy, just pay the handling fee, and pay off the car loan once you have sufficient funds.