Toyota introduced the Celica GT-Four (Classified as ST165 to distinguish from the standard model ST160) onto the Japanese market in October 1986. With full-time all-wheel drive, including an electronically controlled central locking differential, and a turbocharged version (3S-GTE) of the GT-S 2.0 L engine producing 142 kW (190 hp)
Debuting in the 1988 Tour de Corse, the Celica didnâ€™t achieve success until Rally Australia the following year. For the first time a Japanese manufacturer enjoyed real success in Group A, leading the way for a new generation of rally cars from Mazda, Mitsubishi and Subaru.
Toyota ST165 chassis design
The Toyota ST165 chassis design was quite acclaimed for its time, and chose not to make any drastic suspension changes for the AWD GT-Four. The front suspension comprises MacPherson struts with an anti-swaybar and strut tower brace, while the rear employs struts with a trailing link and twin lateral links per side plus an anti-swaybar.