Can you return a car after signing all the paperwork?

It depends on the dealership's policy and the terms of the agreement you signed. Generally, once you sign all the necessary paperwork, title, registration and insurance for a car, it's considered a binding purchase and the deal cannot be reversed.

That said, some dealerships may offer a short grace period during which you can cancel the purchase and return the car. This is called a Right to Cancel and the duration can vary from state to state and dealerships. For example, in California, you have a three-day cooling-off period where you can cancel the contract.

To know for sure if you can return a car after signing the paperwork, carefully review the sales contract, especially any sections about a cancellation period or return policy. Additionally, communicate with the dealership directly to inquire about their specific policies.