
Mitsubishi Sigma is a model name that was used by the Japanese automobile manufacturerMitsubishi Motors between 1976 and 1996. Mitsubishi has utilized the "Sigma" name on several different vehicles based onMitsubishi Galant andMitsubishi Diamante sold in various markets during this time. The GSX-R 2.0 turbo model was fitted with a Single Overhead Cam cyclone motor which was the precursor to the infamous 4G63T twin cam motor.
Between 1976 and 1987 over three generations, theMitsubishi Galant sedan sold in Japan was suffixed with the "Σ" (sigma) badge.
Between 1980 and 1987 over two generations, the version of theMitsubishi Galant sedan and station wagon produced and sold in Australia retailed under the Mitsubishi Sigma name. Between 1977 and 1980, prior to Mitsubishi taking overChrysler Australia's operations, this model had been marketed as theChrysler Sigma.
Between c. 1977 and c. 1988 over three generations, the version of theMitsubishi Galant sedan and station wagon sold in New Zealand retailed under the Mitsubishi Sigma name.
The sedan bodywork of theMitsubishi Galant (fifth generation) was sold in North America from 1985 for the 1986model year as the Mitsubishi Galant Σ (sigma), and from 1988 to 1990 for the 1989 and 1990 model years as the Mitsubishi Sigma.
A six-window, pillared sedan version of the first generation of theMitsubishi Diamante hardtop sedan was sold in Japan and Europe as the Mitsubishi Sigma between 1991 and 1996. In Europe, the Australian-built station wagon derivative was also sold under the Sigma name. The Sigma also formed the basis of the Australian-madeMitsubishi Magna (second generation).