History Car 1980s

Toyota Celica GT-Four ST165

Overview Specs Highlights Characteristics

Overview

Toyota Motor Corporation's GT-Four ST165 brought a turbocharged full-time four-wheel-drive architecture to the fourth-generation Celica liftback. Toyota's official vehicle history dates the road model's introduction to October 1986 and gives 185 PS for the Japanese 3S-GTEU road engine. The racing car was prepared under FIA Group A rules by Toyota Team Europe in Cologne; it should not be confused with Toyota's previous rear-drive Group B Celica Twincam Turbo or the later ST185/ST205.

The FIA Historic Database lists Celica 2000 GT-Four ST165 Group A form A-5363, effective 2 May 1988, with 3,397 cc turbo-adjusted class displacement. The actual road/competition 3S-GTE-family engine was approximately 1,998 cc, so the 3,397 cc figure reflects the 1.7 forced-induction capacity coefficient and is not a 3.4-litre engine.

The 1989 Rally Australia was the first ST165 outright WRC victory and also Toyota's first WRC round win with this Group A platform. Juha Kankkunen/Juha Piironen won ahead of Kenneth Eriksson/Staffan Parmander in another ST165, a Toyota one-two. The model's 1990 Safari victory and Carlos Sainz/Luis Moya's 1990 drivers' title belong to the next decade. Nor should the ST165 be credited with the WRC manufacturers' titles subsequently earned by the ST185 in the 1990s.

Technical Specs & Innovations

  • Model identity: Toyota Celica GT-Four ST165, fourth-generation Celica T160-derived liftback
  • 1980s competition category: FIA Group A production-based rallying, distinct from Group B 1980s Celica Twincam Turbo
  • FIA homologation: A-5363, effective 2 May 1988
  • Physical engine volume: Approximately 1,998 cc Toyota 3S-GTE family turbocharged petrol inline-four
  • FIA regulatory displacement: 3,397 cc class-adjusted volume at Group A's 1.7 turbo multiplier; not real engine volume
  • Engine architecture: Front-transverse water-cooled inline-four, DOHC and four valves per cylinder
  • Road GT-Four Japan reference: 3S-GTEU rated 185 PS and 24.5 kgm in Toyota's original road-model historical record
  • Works rally output: Group A boost and ECU tuning much higher than 185-PS road figure; no exact universal works 1988/89 dyno number asserted
  • Turbocharger: Single turbo with charge-air intercooling; Toyota 3S-GTE technology
  • Engine management: Production-origin electronic fuel injection and competition controls/boost calibration
  • Competition developer: Toyota Team Europe (TTE), based in Cologne, Germany
  • Drive arrangement: Full-time all-wheel drive, unlike standard FWD fourth-generation Celica grades
  • Original road gearbox: Five-speed manual full-time 4WD transaxle; works ratios/cases followed FIA homologation extensions
  • Centre differential: Group A centre-coupling/differential developed through homologated transmission options; road locking features not automatically copied to works cars
  • Front and rear differentials: Competition limited-slip characteristics and final-drive choices varied with rally surface
  • Body/chassis: Reinforced production Celica liftback steel monocoque with FIA roll cage
  • Safety equipment: Competition fuel cell, extinguishers, underbody protection and crew safety restraints
  • Road wheelbase reference: 2,525 mm in ST165 road-car specification
  • Road length reference: 4,365 mm; road production figures are not proof of rally body aero measurement
  • Road width reference: 1,710 mm before rally arches/specific homologated bodywork
  • Suspension: MacPherson-strut-type independent rally suspension with reinforced mounts and adjustable geometry
  • Brake configuration: Vented rally discs and multipiston competition calipers, choices constrained by wheel diameter and FIA homologation
  • Tyre and rim strategy: Different gravel/snow and tarmac wheel sizes, compounds and steering alignments
  • Intercooling and heat rejection: Engine/charge-air cooling major considerations on long hot rallies, with FIA extensions for drivetrain and brakes
  • FIA 1988 extension scope: Gear ratios, final drive, brakes, steering, suspension and bodywork options in original form 5363 extensions
  • First WRC win date: September 1989 Rally Australia, Kankkunen/Piironen
  • 1989 event one-two: Second: Kenneth Eriksson/Staffan Parmander in another ST165, not a Lancia
  • 1990 model results boundary: The 1990 Safari and Carlos Sainz 1990 drivers' title are later, not 1989
  • 1990s successor: ST185 introduced later, earned different manufacturer titles; do not attribute them to the ST165

🏆 Competitive Highlights

  • October 1986 road-car launch: Toyota introduced the turbocharged full-time 4WD Celica GT-Four ST165 in Japan.
  • 2 May 1988 FIA homologation: Group A A-5363 became effective, opening the ST165 works homologation era.
  • 1988 Tour de Corse: The ST165 started its WRC works programme; development was still underway against Lancia's established Deltas.
  • 1988 further development: Toyota Team Europe gathered tarmac and gravel operating experience while resolving engine and drivetrain weaknesses.
  • 1989 Safari Rally: Toyota's separate Group B Celica Twincam Turbo had earlier Africa history; the ST165 did not win this Safari round.
  • 1989 Rally Australia first win: Juha Kankkunen/Juha Piironen won outright in ST165, giving Toyota its first win with the GT-Four.
  • 1989 Rally Australia runner-up: Kenneth Eriksson/Staffan Parmander finished second in a second ST165; Lancia's Markku Alén was third.
  • 1989 title outcome: Lancia secured the 1989 manufacturers' championship; Kankkunen's ST165 event win did not confer a Toyota manufacturers' title.
  • 1990 Safari Rally: The ST165 achieved a Safari victory in the following year, separate from its first 1989 WRC win.
  • 1990 drivers' title: Carlos Sainz/Luis Moya won the drivers' championship using ST165 in 1990, outside the 1980s archive window.
  • Successor era distinction: ST185/ST205 championship records in 1990s rallying are separate cars and homologations.

Driving Characteristics

The 3S-GTE's turbo torque and full-time four-wheel-drive configuration were designed to make a production-derived Celica accelerate effectively on gravel and snow. The transverse front-engine packaging brought more load onto the nose than mid-engined Group B cars, requiring attention to steering precision and differential locking.

Road output of 185 PS was far below the works rally tune, while FIA A-5363 extensions document meaningful transmission and suspension evolution through 1988–90. A rally driver in 1989 experienced a different setup from a Japanese showroom GT-Four, even though the shell and architecture were related.

Toyota's Australian one-two reflected a strong combination of competitive pace and mechanical completion, but it does not imply that the ST165 won a manufacturers' world championship during 1989 or that 1990 title achievements happened in the 1980s.

Development & legacy

The ST165's 1988 entry and 1989 Australian win established the basis for Toyota's 1990 Sainz success and later GT-Four championships. Its story is strongest when road data, FIA turbo-equivalent paperwork, 1989 event classifications and 1990-plus achievements are kept separate.

Research sources & verification

← Previous Car Talbot Sunbeam Lotus
Back to Cars Index
Volkswagen Golf GTI Mk1 / Mk2 Next Car →

Watch rallies anywhere — bypass region blocks with NordVPN.

Fast servers for HD streams Servers in 60+ countries 30-day money-back

Unblock coverage — Save up to 77% + 3 months free

Sponsored link. Using our partner links helps support Compromised Internals at no extra cost to you.