For the 1991 season, team owner Giancarlo Minardi arranged a supply of Ferrari V12 engines to replace the Cosworth V8s that it had used since 1988.

[1] The M191 debuted in the 1991 United States Grand Prix, driven by Italians Pierluigi Martini and Gianni Morbidelli.

[3] Despite qualifying well on occasion (with a best of 8th place on the grid in San Marino and Japan), Morbidelli failed to score any points.

With it, Morbidelli, back in the team after his one-off drive for Ferrari at the tail end of the previous season, finished 7th at the Brazilian Grand Prix.

The M191 featured a mostly black livery, with few spots in yellow and white and sponsorship from SCM Group, among other companies.