Toyota Celica Fourth generation

1985 to 1989
Overview
Production	Aug 1985 – Aug 1989
Assembly	Tahara, Aichi, Japan Toyota, Aichi, Japan (Tsutsumi plant)
Body and chassis
Body style	3-door liftback 2-door coupe 2-door convertible
Layout	Front engine, FWD / 4WD
Platform	T160
Related	Toyota Carina Toyota Carina ED Toyota Corona Coupé
Powertrain
Engine	1.6 L I4 4A-GE 1.8 L I4 1S-iLU 1.8 L I4 4S-Fi 2.0 L I4 2S-ELC 2.0 L I4 2S-FE 2.0 L I4 3S-FE 2.0 L I4 3S-GE 2.0 L I4 3S-GTE turbo
Transmission	4-speed automatic 5-speed manual
Dimensions
Wheelbase	2,525 mm (99.4 in)
Length	4,410 mm (174 in) (coupe & convertible) 4,365 mm (171.9 in) (liftback)
Width	67.3 in (1,710 mm) 66.7 in (1,690 mm) (Japan)
Height	49.8 in (1,260 mm)

In August 1985 the Celica was changed completely. It was an all-new vehicle with front wheel drive, a rounded, flowing body and new 2.0 L four-cylinder engines. The Celica was no longer built on the Toyota A platform, and instead realigned with the Toyota T platform underpinning the Toyota Corona. The Toyota A platform was now exclusive to the Toyota Supra. The coupe bodystyle in Japan was used only for the Corona Coupe, sold only at Japanese Toyota dealerships Toyopet Store without the retractable headlights. An optional feature only offered on the Corona Coupe was four-wheel steering, not shared with the Celica during this generation, however, the turbocharged engine on the Celica was not installed in the Corona Coupe.

Toyota introduced the "ultimate Celica", the GT-Four (ST165) onto the Japanese market in October 1986. With full-time all-wheel drive, including an electronically controlled central locking differential, and a turbocharged version of the GT-S 2.0 L engine producing 190 hp (142 kW) (3S-GTE), it immediately took its place as the flagship of the Celica range, and became the official Toyota rally car for all years of production. The GT-Four, with a revised viscous coupling central locking differential, began export in 1987 (1988 US model year) and marketed in North America as the All-trac Turbo. It was rated at 190 bhp (142 kW; 193 PS) and 190 lb·ft (258 N·m). The All-trac system was also offered for a limited time on the Camry, and Corolla in North America without the turbo, as well as the normally aspirated and supercharged Previa.

The ST165 chassis design was quite acclaimed in its time. Toyota 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.

The ST165 GT-Four made its World Rally debut in the 1988 Tour de Corse and finished 6th. The first victory came in 1988 Cyprus (non-WRC), and the first WRC victory in 1989 Rally Australia.

The Convertible or better known as Cabriolet was based on the 2.0 GT. The GT-S was badged 2.0 GT-i 16.