This manual covers the MazdaSpeed3 (model code BK), a performance-oriented, 5-door hatchback produced in 2003. As a hot hatch variant of the Mazda 3, it is engineered for enthusiastic driving, featuring a turbocharged 2.3-liter inline-4 engine producing 263 horsepower and 280 lb-ft of torque, a sport-tuned suspension, aggressive styling, and a standard helical limited-slip differential. Its design emphasizes a balance of practicality and spirited performance, competing within the performance compact segment.
This comprehensive Workshop Service Repair Manual provides detailed information for the maintenance, diagnosis, and repair of the MazdaSpeed3. It covers all major mechanical, electrical, and body systems, including the engine, fuel, cooling, exhaust, transmission, drivetrain, suspension, steering, brakes, and HVAC systems. The manual offers extensive troubleshooting guides, component removal and installation procedures, diagnostic steps for various systems, and technical specifications. It is designed to assist owners, mechanics, and technicians in effectively maintaining and repairing the vehicle, ensuring optimal performance and longevity.
Model Designation:
MazdaSpeed 3
Generation:
1st Generation
Body Style:
5-door Hatchback
Market Position:
Performance-oriented compact hatchback, positioned as a hot hatch variant of the mainstream Mazda 3.
Competitive Analysis:
Competed against other performance compacts like the Volkswagen GTI, Subaru WRX, and Mitsubishi Lancer Evolution (though generally positioned at a lower price point than the latter two).
Key Features:
Turbocharged engine, sport-tuned suspension, aggressive styling, limited-slip differential (standard), performance braking system.
Coverage Areas:
All major mechanical, electrical, and body systems; comprehensive diagnostics and repair procedures.
Page Count:
Approximately 2500+ pages (estimated for a comprehensive workshop manual)
Manual Type:
Workshop Service Repair Manual
Systems Covered:
Engine (including turbocharged systems), Fuel System, Ignition System, Cooling System, Lubrication System, Exhaust System, Transmission (Manual & Automatic), Drivetrain, Suspension, Steering, Brakes (ABS, EBD), HVAC, Electrical System (wiring diagrams, components), Body & Chassis, Interior Components, Diagnostic Trouble Codes (DTCs).
Procedures Included:
Routine maintenance, scheduled service, troubleshooting, component removal and installation, diagnostic procedures, repair and overhaul of all major systems, electrical diagnostics, bodywork repair, wiring harness repair, component testing, specifications and tolerances.
Technical Depth:
Comprehensive, covering basic maintenance to complete engine and transmission rebuilds, advanced electrical diagnostics, and detailed troubleshooting guides. Geared towards professional technicians but accessible to skilled DIY mechanics.
File Format:
Searchable PDF
Print Quality:
High-resolution images, diagrams, and text, suitable for printing.
Binding Type:
N/A (Digital Download)
Paper Type:
N/A (Digital Download)
Engine Type:
Inline 4-cylinder, turbocharged, intercooled
Displacement:
2.3 Liters (2261 cc)
Horsepower:
263 hp @ 5500 rpm
Torque:
280 lb-ft @ 3000 rpm
Fuel Induction:
Electronic Multi-Port Fuel Injection (MPI) with Turbocharger
Fuel Type:
Premium Unleaded Gasoline (91 octane or higher recommended)
ECU Type:
Denso Electronic Control Unit (ECU)
Standard Transmission:
6-speed Manual Transmission
Optional Transmission:
None for this model year
Limited Slip Differential:
Standard (Helical Type)
Manual Transmission Fluid:
API GL-4, SAE 75W-90 (Mazda Genuine Gear Oil or equivalent)
Length:
175.0 inches (4445 mm)
Width:
70.1 inches (1780 mm)
Height:
57.5 inches (1460 mm)
Wheelbase:
104.3 inches (2650 mm)
Curb Weight:
Approximately 3175 lbs (1440 kg)
Gross Vehicle Weight Rating:
Approximately 4200 lbs (1905 kg)
Cargo Volume:
15.1 cu ft (with rear seats up)
NHTSA Front Impact Driver:
5-Star
NHTSA Front Impact Passenger:
5-Star
IIHS Front Crash Rating:
Good
ABS:
Standard, 4-wheel disc brakes with ABS
Traction Control:
Standard (TCS)
Electronic Brakeforce Distribution:
Standard (EBD)
Airbags:
Front dual-stage airbags, front side-impact airbags, front and rear side-curtain airbags
Seatbelts:
3-point front and rear seatbelts with pretensioners and load limiters
Infotainment System:
Basic AM/FM/CD audio system with available premium Bose audio. Steering wheel audio controls.
Display:
Digital clock and radio display. Optional multi-information display.
Auxiliary Input:
Available on some trims/aftermarket installations.
Headlights:
Halogen projector headlights
Oil Change Interval:
Every 5,000 miles or 6 months, whichever comes first (under normal driving conditions).
Air Filter Replacement:
Every 15,000 miles or 12 months.
Spark Plug Replacement:
Every 30,000 miles (refer to manual for specific plug type).
Timing Belt Replacement:
This model uses a timing chain, not a belt, requiring no scheduled replacement under normal circumstances.
Engine Oil Type:
SAE 5W-30, API SN or ILSAC GF-5 certified (Mazda Genuine Oil or equivalent)
Engine Oil Capacity:
4.9 US quarts (4.6 liters) with filter change
Coolant Type:
Mazda Super Long Life Coolant (Blue) or equivalent ethylene glycol based coolant
Brake Fluid Type:
DOT 3 or DOT 4
Power Steering Fluid Type:
Mazda Genuine Power Steering Fluid or Dexron III/Mercon ATF
Known Issues:
Potential for turbocharger failure (especially wastegate rattle or compressor issues), clutch wear due to aggressive driving, ECU software glitches affecting boost control, catalytic converter failure due to rich fuel mixtures, injector clogging, and oil consumption.
Common Repairs:
Turbocharger repair/replacement, clutch replacement, PCV valve cleaning/replacement, fuel injector cleaning/replacement, engine mount replacement.
Brand Heritage:
Mazda has a history of producing sporty and driver-focused vehicles, often incorporating rotary engine technology and unique design philosophies.
Model Evolution:
The MazdaSpeed3 was the high-performance variant of the second-generation (BK) Mazda 3. It was designed to fill the gap left by previous performance Mazda models and appeal to enthusiasts seeking a practical yet potent hatchback.
Production Years:
2003-2009 (for the BK generation; specific to 2003 model year for this manual)
Manufacturing Location:
Japan (primarily Mazda's Hofu Plant)
Recognitions:
Generally well-received by automotive journalists for its performance and value within the hot hatch segment. Often praised for its handling and powerful turbocharged engine.
