The calculation method of down payment and monthly repayment for buying a car is as follows:

1. Equal principal repayment method: calculation formula: monthly monthly payment = (loan principal: repayment Number of months of repayment) + (principal - cumulative amount of principal repaid) Interest on repayment of loan principal.

2. Equal principal and interest repayment method: calculation formula: monthly monthly payment = [loan principal × monthly interest rate × (1 + monthly interest rate) number of repayment months] [(1 + monthly interest rate)] Number of repayment months - 1]; the equal principal and interest repayment method is to repay the principal and interest of the loan in equal installments in each period. In addition, the loan interest for equal principal repayments is lower than the loan interest for equal principal and interest repayments, but the early repayment pressure is relatively high.

The down payment for buying a car with a loan starts from 20% of the vehicle sales price, and the down payment will be different for different vehicles and different years. Generally, customers can make installment payments based on a three-year loan term. All scientific and technological personnel, civil servants, teachers, doctors, corporate legal representatives, managers of large enterprises and financial system staff can apply for loans with a term of 1 to 5 years according to their selected car models.

The above is some of my understanding of car purchase installments. I hope I can help you.