Which Ford subcompact formed the basis of the Mustang II?

The Ford Pinto formed the basis of the Mustang II. Ford used the subcompact’s architecture and components as the starting point for a smaller Mustang designed for an era of expensive fuel and tighter emissions and safety rules.

The Mustang II was not simply a rebadged Pinto. Ford gave it a distinctive body, an exclusive front subframe, and Mustang-specific suspension and styling. Even so, the relationship was close enough that the Mustang II shared important engineering and packaging ideas with Ford’s North American subcompact. Its 2.3-liter four-cylinder engine was also sourced from the Pinto family.

The connection is often remembered because the Pinto later became associated with fuel-tank safety controversies, but the Mustang II had its own structure and equipment. Ford introduced the new Mustang for 1974, and its smaller dimensions helped it compete with cars such as the Datsun 240Z, Toyota Celica, and European Ford Capri. The Pinto-based strategy helped Ford sell more than a million Mustang IIs before the 1979 redesign.