The loan interest for buying a used car is between 4%- 10%. Under normal circumstances, the interest rate of second-hand car loans will be slightly higher than that of new car loans. The specific interest rate depends on the borrower's credit history, loan term, lending institutions and other factors. The second-hand car loan interest rate is between 4%- 10%. Loan refers to a kind of lending behavior that the lender provides monetary funds to the borrower on the condition that the principal and interest are repaid at the agreed interest rate and time limit according to certain loan principles. This kind of lending behavior consists of the object, condition, purpose, term, interest rate and method of lending. Borrowers get loans from banks to engage in production and business activities, or buy raw materials, or buy necessary equipment, or pay other expenses, and the loans will eventually be combined with certain factors of production. The loan method is the way for banks to issue loans to enterprises.