In the United States, there is generally no federal law that requires car dealerships to offer a 48-hour grace period to return a car. However, some states and dealerships have their own policies regarding return periods for cars. For example, California has a 2-day right of rescission law that allows car buyers to cancel their purchase within two days of signing the contract, as long as the car has been driven less than 250 miles.
It's important to check with the specific dealership and state laws to determine if a grace period applies in your case. If there is no grace period, you may still be able to return the car if there are issues with the vehicle or if you are able to negotiate with the dealership.
