To calculate the re-payments for your car loan, enter the value of the vehicle into the "Loan" field, select the payment period from the "Period" drop-down menu, select the interest from the drop-down menu available under "Interest", than enter deposit value + trade-in value (if you are trading your current vehicle) into the "Deposit" field, and click on the "Calculate Loan..." button.
The system will automatically process the submitted values, giving you a rough estimate of your monthly Car Loan re-payments.