That being said, don’t assume your lender won’t allow someone to take over your loan. Call your lender and ask about their policy on transferring loans. If they allow it, your brother can likely assume the loan if he has a good income, debt-to-income ratio, and credit score.
Remember, you need to pay off the loan before you can transfer the title. Try to work the cost of the loan into the price of your car—so you can pay off the loan and still make a profit.