You can refinance a car loan as soon as you find a lender willing to approve the new loan, but there are practical timing considerations:

• Title Transfer: Most lenders require that the car's title has been transferred to your current lender before refinancing, which usually takes about 60 to 90 days after purchase

• Waiting Period: While some lenders allow refinancing within the first three months, many require you to have had the loan for at least six months

. Waiting six months or more also allows your credit score to recover from the initial loan application hard inquiry, potentially qualifying you for better rates

• Loan Term Remaining: It is generally recommended to refinance when you have at least two years remaining on your loan to maximize potential interest savings, as most interest is paid early in the loan term

• Best Practice: Many experts suggest waiting at least six months to a year before refinancing to benefit from improved credit scores, a positive payment history, and a wider range of lender options

In summary, while refinancing can technically be done as soon as 2-3 months after purchase once the title transfers, the optimal time to refinance is usually after six months to a year, with at least two years left on the loan, to secure the best terms and savings