Buying cars through Sam's Club is easier than ever. First, you need to become a member of Sam's Club. Then, enter details about your membership, and choose a category to begin. This means picking between wanting to buy a new car or an old car or sell your existing car. You can also choose according to your preferred brand. Now, compare the prices and contact the dealer to test drive and confirm the purchase. You need to go through these steps more or less to buy cars from Sam's Club cars buying program. You cannot purchase cars if you do not become their member because they keep a database of buyers and sellers, but you can purchase car accessories from them. However, you can't negotiate with the dealer about the price because the price is pre-negotiated.