Yes, paying off a car loan can help improve your credit score. Your credit score is determined by several factors, including your payment history, credit utilization, length of credit history, types of credit accounts, and new credit applications. When you make your car loan payments on time, you demonstrate responsible credit behavior, which can help improve your credit score.

Additionally, paying off your car loan can also improve your credit utilization ratio, which is the amount of credit you're using compared to the amount of credit you have available. When you pay off a loan, you decrease the amount of credit you're using, which can improve your credit utilization ratio and potentially increase your credit score.

However, it's important to note that simply paying off a car loan won't necessarily have an immediate and significant impact on your credit score. Credit scores are complex and can be affected by a variety of factors. Nonetheless, paying off a car loan is generally a positive step toward building and maintaining good credit.