Can I negotiate the doc fee?

Sometimes, but often not directly. Many dealers charge the same doc fee to every customer, and in some states they must charge it uniformly, so they may refuse to drop it. The practical approach is to negotiate the total out-the-door price, which lets the dealer lower the vehicle price to offset the fee. If your state caps doc fees, check the cap on your state attorney general or DMV website to confirm you are not being overcharged.