The Mitsubishi Colt Galant GTO (Gran Turismo Omologato) was first shown as the Galant GTX-1 showcar at the 1969 Tokyo Motor Show. Sales began in November 1970, when it was the flagship hardtop variant of Mitsubishi Heavy Industries's then-new Colt Galant sedan. The nameplate was revived in 1990 for the Mitsubishi GTO, although this name was only used in the Japanese domestic market.