The 2007 MazdaSpeed3, identified by internal code BK, represents Mazda's commitment to exhilarating driving dynamics within the sport compact segment. This performance-oriented hot hatch is powered by a 2.0-liter MZR-CD inline-4 turbocharged diesel engine featuring Direct Injection and a Variable Geometry Turbocharger, delivering approximately 177 horsepower and 280 lb-ft of torque. Engineered with Mazda's signature "Zoom-Zoom" philosophy, the MazdaSpeed3 offers a compelling blend of turbocharged acceleration and sporty handling, distinguishing itself among competitors like the Volkswagen GTI and Subaru WRX. Its robust construction and performance-focused design make it a noteworthy vehicle for enthusiasts seeking an engaging driving experience. This comprehensive workshop service and repair manual provides detailed guidance for the maintenance and repair of the 2007 MazdaSpeed3. Covering over 2000 pages of information in English, it delves into all major vehicle systems, including complete engine mechanicals, the turbocharger system, engine management, the 6-speed manual transmission, drivetrain, suspension, steering, brakes, and electrical systems. The manual offers step-by-step repair procedures, rebuild instructions for the engine and transmission, and systematic troubleshooting guides for various faults. It is designed to assist both professional technicians and experienced DIY enthusiasts in ensuring the optimal performance and longevity of their vehicle. 🏷️ Basic Information Identification Make: Mazda Model: MazdaSpeed3 Year: 2007 Codes Internal Model Code: BK Engine Code: MZR-CD (Disi Turbo) 👋 Introduction Market Position Category: Sport Compact / Hot Hatch Target Audience: Performance-oriented drivers seeking enhanced driving dynamics and turbocharged power Competitive Analysis Key Competitors 2007: Volkswagen GTI, Subaru WRX, Honda Civic Si Key Features Performance Focus: Emphasis on turbocharged acceleration and sporty handling Design Philosophy: Zoom-Zoom driving dynamics 📋 Manual Details Coverage Areas Coverage Scope: Comprehensive workshop service and repair Page Count Estimated Pages: 2000+ Manual Type Type: Workshop Service Repair Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine Mechanical: Complete engine assembly, internal components, timing, lubrication, cooling, fuel injection, turbocharger system Engine Management: ECU diagnostics, sensor functions, actuator controls, emissions systems, ignition system Transmission: Manual transmission (MTX) overhaul, operation, and diagnostics Drivetrain: Front-wheel drive system, differential, axles, CV joints Suspension: Front and rear suspension components, geometry, alignment, shock absorbers, springs, bushings Steering: Power steering system, steering rack, steering column, linkages Brakes: Front and rear brake systems, ABS, EBD, brake fluid specifications, caliper and rotor service Electrical: Wiring diagrams, fuses, relays, lighting systems, starting and charging system, battery, instrumentation Body And Trim: Exterior panels, interior trim, doors, windows, seats, roof HVAC: Heating, ventilation, and air conditioning system service and repair Diagnostic Troubleshooting: DTC codes, symptom-based troubleshooting guides Procedures Included Maintenance Tasks: Oil changes, filter replacements, fluid checks and changes, belt inspections and replacements Repair Procedures: Step-by-step instructions for component removal, installation, and adjustment Rebuild Procedures: Detailed instructions for engine and transmission rebuilds Troubleshooting Guides: Systematic diagnostic approaches for common and uncommon faults Technical Depth Depth: Professional level, suitable for dealership technicians and advanced DIY enthusiasts 📊 Manual Specifications File Format File Type: PDF Print Quality Quality: High-resolution, printable pages Binding Type Binding: N/A (Digital Download) Paper Type Paper: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Type: Inline-4 Turbocharged Diesel Direct Injection (MZR-CD Disi Turbo) Displacement: 2.0 Liters (1998 cc) Performance Horsepower: 177 hp @ 3500 rpm (estimated for European/Australian spec, US spec might differ slightly based on tuning) Torque: 280 lb-ft (380 Nm) @ 2000 rpm (estimated for European/Australian spec) Fuel System Fuel Delivery: Common Rail Direct Injection (CRDI) with Turbocharger Fuel Type: Diesel Engine Mechanical Bore X Stroke: 84.0 mm x 90.0 mm Compression Ratio: 17.3:1 Valvetrain: DOHC, 16 valves (4 valves per cylinder) Turbocharger Details: Variable Geometry Turbocharger (VGT) 🔧 Transmission Standard Transmission Type: 6-speed Manual Transmission (MTX) Optional Optional Transmission: N/A (Manual transmission only for this performance variant) Features Gear Ratios Estimated: Specific ratios vary, but designed for sporty driving with close gearing. Clutch Type: Hydraulically operated, single dry plate clutch 📐 Dimensions Exterior Length: Approx. 4515 mm (177.8 inches) Width: Approx. 1770 mm (69.7 inches) Height: Approx. 1470 mm (57.9 inches) Wheelbase: Approx. 2640 mm (103.9 inches) Weights Curb Weight: Approx. 1400-1450 kg (3086-3197 lbs) 🛡️ Safety Features Ratings Crash Test Ratings: Refer to NHTSA or IIHS for specific model year ratings; typically performed well for its class. Active Features Traction Control: Standard Electronic Stability Control: Standard (DSC - Dynamic Stability Control) Antilock Braking System: Standard (ABS) Brake Assist: Standard (EBA - Electronic Brake Assist) Passive Features Airbags: Front airbags, side airbags, curtain airbags Seatbelts: Pretensioner and load-limiting front seatbelts 💡 Technology Features Infotainment Audio System: Standard AM/FM/CD player, optional premium audio systems available. Display: Central information display, climate controls. Driver Assistance Cruise Control: Standard Connectivity Auxiliary Input: Available on some trims for connecting external audio devices. 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 5,000-7,500 miles (8,000-12,000 km) or 6-12 months, depending on driving conditions. Air Filter Replacement: Inspect every 15,000...