Regardless of how you buy, these items are non-negotiable at any dealership or for legal road use:
If you plan to apply for a loan at a lender or dealership, you will need to provide "proof of ability to pay": what documents do you need to buy a car
To buy a car, the documents you need depend largely on whether you are buying from a dealership or a private seller, and whether you are financing the purchase or paying in cash. Essential Identification and Legal Proof Regardless of how you buy, these items are
Documents To Bring When Buying A Car - Canfield - Haus Auto Group Regardless of how you buy
You generally cannot take delivery of a car without active insurance.
You must set up a policy beforehand and provide the binder or policy number at the time of purchase. Financing-Specific Documents
Bring your existing insurance card or policy declaration page. Most insurers provide a grace period to add a new vehicle.