1. Stimulate consumption: In order to avoid becoming a gimmick, some car dealers will vigorously promote high-priced or difficult-to-sell models, thus stimulating consumers to buy.

2. Handling fee: Although advertised as interest-free, when actually handling the installment loan business, a certain handling fee will be charged according to the loan term, which is equivalent to paying the loan interest.

3. Bundle sales: Dealers will set some preconditions, such as handling vehicle insurance and purchasing in-store GPS services to earn more profits.

4. Vehicle ownership: Before the installment payment is settled, the vehicle ownership belongs to financial institutions, and consumers only have the right to use and are responsible for the wear and maintenance of vehicles.

5. Contract trap: Financial institutions may cheat on loan contracts, such as inducing the signing of financial lease contracts, making overlord clauses, etc., and consumers will easily be routine if they don't read the contracts carefully.

6. Hidden charges: In addition to the above fees, there may be other hidden charges, such as financial service fees, which lead to the loan amount being higher than the actual car purchase amount.

7. Overdue risk: The borrower needs to repay the loan in full and on time, otherwise his personal credit record will be affected and he may face high late fees, towing fees and other additional expenses.