If you're financing your car through a bank or credit union, bring the necessary financial documents. This may include pre-approval letters, proof of income (pay stubs, tax returns), and information about your current debts and assets. Having these documents in order helps speed up the financing process.

If you're trading in your old vehicle, you will want to have all relevant documents such as the title, registration, and any loan payoff information. This will facilitate the evaluation and trade-in process, potentially impacting your new car's final cost.

Whether you're paying in cash, financing, or leasing, come with the required payment method. If using a cashier's check or bank draft, ensure it's made out to the correct party. For financing, have your down payment ready and any additional fees that may apply.

Something else to bring when buying a car would be a list of the vehicles you're interested in, along with their VIN numbers and any relevant research about their market value, features, and reviews. This information empowers you during negotiations and ensures you make an informed decision.

Jot down any negotiation points, such as desired add-ons, extended warranties, or specific terms you want to discuss. A clear understanding of your wants can contribute to a smoother negotiation process.

If you're buying a used car, consider bringing a checklist for a thorough mechanical inspection. This may include checking the tires, brakes, and fluids or inspecting for any signs of wear or damage. This checklist can be a handy tool to assess the vehicle's condition before finalizing the deal.