Some manufacturers have, at one time or another, advertised deals in which the purchaser could return a new car for a complete refund; Saturn did that initially, though I don't believe they still offer it. There are no laws I am aware that allow a purchaser to return a car. However, some states have "lemon laws" that allow a purchaser to return a car if it meets some pre-determined level of problems, spends an excessive amount of time being repaired, or some other cirteria.

Most states have "lemon law". My state allows for 6 months before the "implied warranty of merchantability" runs out. To be able to take the car back, it must have failed in a way that materially alters the subject matter for which you bargained.

unless specifically advertised by the dealer/maker, there are no returns. Other than "lemon laws" which will vary state to state there isn't a way to return a car without the dealerships approval... except for a thing called a "roll back", "rewind". When you purchase and finance a car at a dealership, the finance company basically purchases the car and holds onto the title as a lien. Sometimes when selling a used vehicle to someone who has bad credit, the finance manager will attempt to finance the customer within certain guidelines/stipulations set by the actual financing companies without first getting the financing companies approval. This can occur if it is late at night or during the weekend. The finance manager will assume based on down payment and other financial data if a customer can buy a car based on the financial companies guidelines. Sometimes the financial company will turn down the application afterwards. At which point a "roll back", "rewind" occurs and the customer has to return the vehicle. A dealership will also "roll back", "rewind" a new/used vehicle if the customer simply drops off the car at the lot it was purchased and refuses to take responsibility for it. This can work only if the vehicle was very recently purchased. If cash was used, it will be difficult to get the down payment back but the financial company will drop the loan at which point the dealer has no other alternative but to take the vehicle back. The dealership might be able to force the financial company to take the vehicle since they did purchase the contract, however the dealership would also lose the financing company as a result. It's easier for them just to rewind the vehicle. Theoretically, yes there is a grace period. :)

Saturn will offer you a refund up to 3 days but you can only use it towards the purchase of another new vehicle. Maybe you don't like the color or you decide you want more options.

http://www.leaseguide.com/Articles/new-cars.htm "One of the great misconceptions of all time is that there is a 72-hour or three-day grace period in which a car can be returned to the dealer after signing a purchase or lease contract. It's simply not true. The misconception comes from Federal and state consumer laws that relate to door-to-door and health club contracts. Unless a dealer specifies, in writing, that he provides a return policy, there is no return policy."

you need to ask your dealer, every dealer has his own conditions, but i think it's mostly 7 days for money back.