Subaru WRX STI GDB (2001-2007) - Complete Technical Specifications
Complete technical specifications for the Subaru WRX STI GDB (2001-2007). Engine specs, drivetrain, chassis, dimensions, performance data, and capacities for both JDM EJ207 and USDM EJ257 variants.
Subaru WRX STI GDB (2001-2007) - Complete Technical Specifications
Quick Specs Summary
- Years: 2001-2007 (Second Generation WRX STI)
- Chassis Code: GDB (sedan), GGB (wagon - JDM only)
- Engine: EJ207 2.0L (JDM) / EJ257 2.5L (USDM)
- Power: 265-300 hp (JDM), 300 hp (USDM)
- Drivetrain: Symmetrical AWD with Driver Controlled Center Differential (DCCD)
- Transmission: 6-speed manual (2004+), 5-speed manual (2001-2003)
Generation Overview
The Subaru WRX STI GDB represents the second generation of Subaru's legendary rally-bred performance sedan, produced from 2001 to 2007. Building on the success of the GC8 generation, the GDB introduced significant refinements including:
- More rigid chassis with increased torsional stiffness
- Driver Controlled Center Differential (DCCD) for adjustable torque split
- Inverted front struts for improved suspension geometry
- Larger Brembo brakes (4-pot front, 2-pot rear)
- Intercooler water spray system (optional on some models)
- 6-speed transmission from 2004 onwards (USDM 2006+)
Key Variants:
- 2001-2002 JDM STI: EJ207 engine, 5-speed transmission, 280 hp (gentleman's agreement)
- 2002-2003 USDM WRX (Bug-Eye): EJ205 2.0L turbo, 227 hp (not STI, included for context)
- 2004 USDM STI: First USDM STI, EJ257 2.5L, 300 hp, 6-speed transmission
- 2004-2005 JDM STI Spec C: Lightweight variant, EJ207, carbon fiber roof, adjustable suspension
- 2006-2007 USDM STI: Hawkeye front end, refined interior, improved sound deadening
- 2006-2007 JDM STI S204: Limited edition, 320 hp, track-focused suspension
Engine Specifications
EJ207 2.0L Twin-Scroll Turbo (JDM Models)
| Specification | Details |
|---|---|
| Engine Code | EJ207 |
| Configuration | Horizontally-opposed 4-cylinder (Boxer) |
| Displacement | 1,994 cc (121.7 cu in) |
| Bore × Stroke | 92.0 mm × 75.0 mm (3.62 in × 2.95 in) |
| Compression Ratio | 8.0:1 (2001-2003), 8.2:1 (2004-2007) |
| Valvetrain | DOHC, 4 valves per cylinder, AVCS (Active Valve Control System) on intake cam |
| Aspiration | IHI VF37 twin-scroll turbocharger (2004+), TD04 (2001-2003) |
| Intercooler | Air-to-air top-mount intercooler |
| Fuel System | Sequential multi-port fuel injection |
| Power Output | 265 hp @ 6,000 rpm (2001-2003), 280 hp @ 6,400 rpm (2004-2007, stated), 300+ hp actual |
| Torque | 253 lb-ft @ 4,000 rpm (2001-2003), 290 lb-ft @ 4,000 rpm (2004-2007) |
| Redline | 7,500 rpm (fuel cut at 7,700 rpm) |
| Fuel Requirement | 98 RON premium unleaded (91-93 AKI US equivalent) |
EJ257 2.5L Twin-Scroll Turbo (USDM Models)
| Specification | Details |
|---|---|
| Engine Code | EJ257 |
| Configuration | Horizontally-opposed 4-cylinder (Boxer) |
| Displacement | 2,457 cc (149.9 cu in) |
| Bore × Stroke | 99.5 mm × 79.0 mm (3.92 in × 3.11 in) |
| Compression Ratio | 8.0:1 (2004-2005), 8.2:1 (2006-2007) |
| Valvetrain | DOHC, 4 valves per cylinder, AVCS on intake cam |
| Aspiration | IHI VF39 twin-scroll turbocharger (2004-2005), VF43 (2006-2007) |
| Intercooler | Air-to-air top-mount intercooler |
| Fuel System | Sequential multi-port fuel injection |
| Power Output | 300 hp @ 6,000 rpm |
| Torque | 300 lb-ft @ 4,000 rpm |
| Redline | 7,000 rpm (fuel cut at 7,200 rpm) |
| Fuel Requirement | 91 AKI premium unleaded minimum (93 AKI recommended) |
Key Engine Differences:
- EJ207 (JDM): Closed-deck block, smaller displacement, higher revving, lighter rotating assembly
- EJ257 (USDM): Semi-closed deck block, larger displacement, more low-end torque, prone to ringland failure under high boost
Drivetrain Specifications
Transmission
6-Speed Manual (2004+ JDM, 2006+ USDM):
- Type: Constant-mesh 6-speed manual
- Gear Ratios:
- 1st: 3.166:1
- 2nd: 2.111:1
- 3rd: 1.448:1
- 4th: 1.088:1
- 5th: 0.825:1
- 6th: 0.652:1
- Reverse: 3.545:1
- Final Drive: 4.444:1 (2006-2007 USDM), 3.900:1 (2004-2005 JDM)
- Clutch: Twin-plate (Spec C), single-plate (standard)
5-Speed Manual (2001-2003 JDM, 2004-2005 USDM):
- Type: Constant-mesh 5-speed manual
- Gear Ratios:
- 1st: 3.166:1
- 2nd: 1.882:1
- 3rd: 1.296:1
- 4th: 0.972:1
- 5th: 0.738:1
- Final Drive: 3.900:1 (JDM), 3.900:1 (2004-2005 USDM)
All-Wheel Drive System
- Type: Symmetrical AWD with Driver Controlled Center Differential (DCCD)
- Center Differential: Electronically controlled multi-plate limited-slip differential
- Torque Distribution: Variable 35/65 to 50/50 front/rear (driver-adjustable via DCCD dial)
- DCCD Modes:
- Auto (-): Computer-controlled torque split based on wheel slip, G-forces
- Auto (center): Balanced mode for mixed conditions
- Auto (+): More rear bias for spirited driving
- Manual Mode: Driver locks torque split at 50/50 (track use)
- Front Differential: Helical limited-slip differential (Spec C: Torsen)
- Rear Differential: R180 mechanical limited-slip differential, 1.5-way (Spec C: 2-way)
Chassis & Suspension
Chassis
- Construction: Unibody steel monocoque
- Rigidity: Increased torsional rigidity vs GC8 (specific figures vary by model year)
- Seam Welding: Spot-welded (Spec C: additional seam welding for rigidity)
- Strut Tower Brace: Front aluminum strut tower brace (standard)
Suspension
Front:
- Type: MacPherson strut, inverted monotube dampers
- Springs: Coil springs (Spec C: stiffer rates)
- Anti-roll Bar: 20mm hollow (Spec C: 22mm)
- Bushings: Rubber (Spec C: pillow-ball upper mounts)
Rear:
- Type: Multi-link independent suspension
- Springs: Coil springs (Spec C: stiffer rates)
- Anti-roll Bar: 18mm (Spec C: 20mm)
- Bushings: Rubber (Spec C: pillow-ball trailing arm bushings)
Brakes
Front:
- Type: Brembo 4-piston opposed-piston calipers
- Rotor Diameter: 326mm (12.8 in) ventilated discs
- Rotor Thickness: 30mm
- Pad Material: Semi-metallic (Spec C: higher friction compound)
Rear:
- Type: Brembo 2-piston calipers
- Rotor Diameter: 316mm (12.4 in) ventilated discs
- Rotor Thickness: 20mm
- Pad Material: Semi-metallic
Brake Master Cylinder: 1 inch bore (Spec C: 15/16 inch for firmer pedal feel)
Wheels & Tires
Standard:
- Wheels: 17×7.5 or 17×8 BBS forged aluminum (gold or silver)
- Offset: +53mm
- PCD: 5×100mm
- Center Bore: 56.1mm
- Tires: 225/45R17 Bridgestone Potenza RE070 (or equivalent)
Spec C:
- Wheels: 17×8 Enkei forged aluminum
- Tires: 235/45R17 Bridgestone Potenza RE070
Dimensions & Weight
| Dimension | Measurement |
|---|---|
| Length | 4,415 mm (173.8 in) - USDM, 4,405 mm (173.4 in) - JDM |
| Width | 1,740 mm (68.5 in) |
| Height | 1,425 mm (56.1 in) |
| Wheelbase | 2,525 mm (99.4 in) |
| Track (Front) | 1,485 mm (58.5 in) |
| Track (Rear) | 1,485 mm (58.5 in) |
| Curb Weight | 1,470 kg (3,241 lbs) - 2004 USDM, 1,395 kg (3,075 lbs) - 2004 JDM Spec C |
| Weight Distribution | 60/40 front/rear (approximate) |
| Ground Clearance | 130 mm (5.1 in) |
Performance
Acceleration
| Metric | JDM (EJ207) | USDM (EJ257) |
|---|---|---|
| 0-60 mph | 4.6 seconds | 4.7-4.9 seconds |
| 0-100 km/h | 4.8 seconds | 5.0 seconds |
| Quarter Mile | 13.2 @ 107 mph | 13.3-13.5 @ 105 mph |
| 60-120 mph | 9.2 seconds | 10.1 seconds |
Top Speed
- Limited: 155 mph (250 km/h) - electronic limiter
- Spec C (JDM): 160 mph (257 km/h) - revised limiter
Handling
- Lateral Acceleration: 0.96g (skidpad, stock tires)
- Slalom Speed: 68 mph (Motor Trend test)
- Nürburgring Lap Time: Not officially recorded (GDB), but enthusiast estimates ~8:10-8:20
Capacities
| Fluid | Capacity |
|---|---|
| Fuel Tank | 60 liters (15.9 US gallons) |
| Engine Oil | 4.8 liters (5.1 quarts) with filter change |
| Coolant | 6.6 liters (7.0 quarts) |
| Transmission | 3.7 liters (3.9 quarts) - 6-speed, 4.0 liters - 5-speed |
| Rear Differential | 1.1 liters (1.2 quarts) |
| Front Differential | 0.8 liters (0.85 quarts) |
Common Specifications FAQ
Q: What's the difference between EJ207 and EJ257? A: EJ207 (JDM) is a 2.0L closed-deck engine designed for high-revving performance, while EJ257 (USDM) is a 2.5L semi-closed deck with more low-end torque. EJ207 is more robust for high boost, EJ257 is prone to ringland failure.
Q: Which transmission is better: 5-speed or 6-speed? A: 6-speed offers closer gear ratios and stronger synchros (less prone to 2nd gear grind). However, 5-speed is simpler and less expensive to repair. 6-speed recommended for performance driving.
Q: What does DCCD do? A: Driver Controlled Center Differential allows you to adjust front/rear torque split on the fly. Auto modes optimize for conditions, Manual locks at 50/50 for track use.
Q: How much power can the stock EJ257 handle? A: Conservative limit: ~350-375 wheel horsepower (420-450 crank hp) on stock internals with proper tuning. Beyond this, forged pistons are recommended to prevent ringland failure.
Q: What's the fuel economy? A: EPA estimates (2006 USDM STI): 17 mpg city, 22 mpg highway, 19 mpg combined. Real-world spirited driving: 14-18 mpg.
Q: Are parts interchangeable between JDM and USDM models? A: Many chassis and suspension parts are identical. Engine internals differ (bore/stroke), turbos differ (VF37 vs VF39/VF43), ECUs differ (JDM requires conversion for USDM use).
Import Eligibility & Pricing
25-Year Import Rule:
- 2001 models: Eligible in 2026
- 2002 models: Eligible in 2027
- 2007 models: Eligible in 2032
Current Market Pricing (2026 estimates):
- 2004-2007 USDM STI: $28,000-$45,000 (depending on miles, condition, mods)
- 2001-2003 JDM STI: $25,000-$40,000 (import cost included)
- Spec C Models: $35,000-$55,000 (premium for rare variants)
- S204 Limited Edition: $60,000-$80,000 (very rare, collector status)
Import Costs (JDM to USA):
- Vehicle purchase: $18,000-$30,000 (Japan domestic price)
- Shipping: $1,500-$2,500 (RoRo or container)
- Customs/duties: $500-$800 (2.5% + fees)
- Compliance: $500-$1,000 (DOT/EPA if not 25-year exempt)
- Total landed cost: $20,500-$34,300
Conclusion
The Subaru WRX STI GDB remains one of the most capable all-weather performance cars ever built, combining rally-proven AWD technology with a turbocharged boxer engine and driver-focused dynamics. Whether choosing the high-revving JDM EJ207 or the torquey USDM EJ257, understanding the detailed specifications helps owners make informed decisions about maintenance, modifications, and long-term ownership.
For maintenance schedules, common issues, and service costs, see our Subaru WRX STI GDB Maintenance Schedule.
For modification guides and performance upgrades, explore our Modification Wiki.
For aftermarket parts and supplier links, visit our Parts Catalog.
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