Personal loan has a higher interest rate, but there are catches to auto loan. If I'm not mistaken there is a 5 year or it may be 10 to where nobody will give you an auto loan if the car is older than that. I think it's 10, but just another thought for you. The car and personal loan are generally non-secure, meaning you don't have to put anything valuable in case you don't finish through with the payments. I think secure loans have a lower interest rate. Either way though, good luck.