The Merkur XR4Ti (eXperimental Racing, 4 series, Turbo, advanced Injection system) was a short-lived United States and Canadian-market version of the European Ford Sierra XR4i. It was the brainchild of then Ford vice president Bob Lutz. It was sold in the US from 1985 to 1989. It was the first vehicle sold by Merkur, followed in 1988 by the Merkur Scorpio.