In 1992, Unser entered the month of May for the second year in a row without a ride. During the first week of practice, Nelson Piquet was involved in a serious crash, and was unable to drive. Unser was hired by Team Menard to fill the position vacated by Piquet. Unser drove to a 3rd-place finish, while his son Al Unser Jr. won the race. It was Team Menard's best Indy 500 finish, the best finish for the Buick Indy engine, and the first time the Buick engine had gone the entire . Later in the year, Unser was selected to drive as a substitute for the injured Rick Mears at Nazareth. It was Unser's first start for Penske since 1989, and his final start in a CART series event. He finished 12th, earning 1 championship point.