There is no 3-day right to cancel a contract signed at a dealership. It is important to read and understand the entire contract before you sign it. Don't sign until you are sure you want to buy the car. Get promises in writing Any promises the dealership makes to you regarding your vehicle or purchase should be written on the Motor Vehicle Purchase Contract. If you are buying a vehicle with the understanding that something will be fixed for you before or after you pick up the car, get it in writing.
Spoken promises are very hard to prove or enforce.
WisDOT can help If you have a problem with a used car you bought from a Wisconsin dealership, WisDOT's Dealer Section may be able to help. However, Wisconsin law says that before it can investigate your case, you must tell the dealership about the problem and give it an opportunity to resolve the situation. Keep a record of any contact with the dealership, including whom you talk to and when. Get an invoice for any repairs, or write down the date, time, and repair person's name. Be reasonable and friendly with the dealer.