There is no one best time to refinance your vehicle. It will depend on various things, and each person and situation is a little different. In general, it is good to look at refinancing when you still have some term left on the loan; the current interest rates are lower than when you signed the loan agreement and if you are in a better financial situation than when you agreed to the loan. If that sounds like you, it might be a great time to contact a lender and see the costs of refinancing your auto loan.