My brother is cdeceased with a car loan,his name only, no estate, with a death certificate can I purchase car from bank

Your brother's car and clothes may be his only estate but he does have an estate.  In some states a DMV form can transfer it to his heirs at law.  While the auto lender generally will take back the car, if you are the only heir and have good credit, the auto lender may let you take over the loan.