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OEM Specifications

1994 Subaru Impreza WRX STi version Manual

Specification specific to Subarus with Applied Model GC8B48D and main Option Code 61 (see note *)

* Cars built for the Japanese Domestic Market (JDM) have an additional “C” or “H” as part of their Option Code, which is sometimes shown on the VIN plate. This is not relevant for this specification page and can be ignored.
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PlatformFirst Generation Subaru Impreza
Body Style4-Door Sedan
Production CycleRevision BJune 1993 to August 1994
Model CodeE-GC8 (JDM cars only for emissions classifications)
SteeringRight-Hand Drive
MarketJapanese Domestic Market (JDM)
Production DatesMarch 1994 to July 1994
Date On SaleJanuary 1994
Chassis List654
Engine Type
ConfigurationFour Cylinder Horizontally Opposed (“Flat Four”)
Cylinder Bore92.0mm
Compression Ratio8.5:1
Fuel TypePetrol
ValvetrainDouble Overhead Camshaft (DOHC)
Valves164Valves per Cylinder
Peak Power250PSat6,500 rpm
Peak Torque309N·mat3,500rpm
Transmission Type Ratio Graph
Transmission5-Speed Manual (5MT)
DriveFull-time Four Wheel Drive with Viscous Limited-Slip Centre Differential (VCD-F4WD)
Wheel Size15×6.0JJ ET55
Tyre Size205/55R15
Colour Options406Metallic Silver (“Light Silver”)
47APearlescent Black (“Black Diamond Pearl”)
936Solid Red (“Vivienne Red, Flamy Red”)
Option Codes
Electric Windows
Central Locking
Air Conditioning
ABS Brakes
Steering Gear Ratio 13:1
Option Code Notes
Additional NotesSubaru Impreza WRX STi version

Built to order Limited Edition with a maximum sales limit of 100 cars per month, starting in March 1994. A plaque was fitted on the offside front suspension strut tower showing the month of build and the build number within that month, so for example, the plaque on GC8-018561 shows “94 May 31/100” for the 31st car built in May 1994.*

The Impreza WRX STi version was based on the Impreza WRX, but with engine and suspension tuned by STi. Modifications over the standard WRX included forged pistons and lightweight HLA, upgraded engine ECU fitted with an additional ROM holding a dedicated STi program, silver STi intercooler with water spray. On the exterior a large rear wing, cherry red grille badge, and body coloured lower bumper grille were the only items to distinguish the STi version from the WRX, but unique 16-inch split-rim 5-spoke alloy wheels were available as an optional extra.

* An additional 100 cars were sold from July 1994 as an “Acropolis Rally” Special Edition, showing a different design of numbered plaque on the offside front suspension strut tower. These were marketed as a celebration of Subaru's overall win at the Acropolis Rally at the end of May 1994, in an Impreza 555 crewed by Carlos Sainz and Luis Moya. Upgrades were purly cosmetic and the cars were mechanically identical to the Impreza WRX STi version, including the same Option Code 61.
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JPGC8 ASubaru Impreza WRX 5MTSep.92Aug.93
JPGC8 C1Subaru Impreza WRX 5MT 1995 ModelAug.94Aug.95
JPGC8 C2Subaru Impreza WRX 5MT 1996 ModelSep.95Jul.96
JPGC8 C2Subaru Impreza WRX V-Limited 5MTDec.95Mar.96