You may be able to refinance your existing car if your circumstances meet your lender’s criteria. Car refinancing just means taking out a new car finance deal to pay off your current one. There are several reasons you might want to refinance your car. You might want to get lower monthly payments, change the length of your loan, or potentially get a better interest rate than the one you currently have. However, it's important to remember that that spreading your outstanding loan over a longer term can reduce the monthly payment but may increase the total amount of interest payable.