The 2007 MazdaSpeed3 represents Mazda's commitment to creating engaging and performance-oriented vehicles, fitting into the compact performance hatchback segment. Building on the practical Mazda3 platform, this model is distinguished by its potent 2.3L turbocharged MZR DISI engine, delivering an impressive 263 horsepower and 280 lb-ft of torque, paired with a 6-speed manual transmission and a helical limited-slip differential for enhanced traction and a dynamic driving experience. Its sporty handling, aggressive styling, and versatile five-door body style made it a compelling choice for enthusiast drivers, competing with notable rivals in its class. This comprehensive workshop service and repair manual provides detailed guidance for the mechanical, electrical, and body systems of the 2007 MazdaSpeed3. It covers essential maintenance procedures, in-depth troubleshooting guides, complete repair instructions for all major components, and technical specifications necessary for maintaining the vehicle's optimal performance and longevity. The manual is designed to assist owners, mechanics, and technicians in understanding, diagnosing, and repairing the vehicle, ensuring it remains in peak condition. 🏷️ Basic Information Identification Make: Mazda Model: MazdaSpeed3 Year: 2007 Engine Variant: 1.6 L MZR I4 (Note: This appears to be an error in the product information. The 2007 MazdaSpeed3 is equipped with a 2.3L turbocharged engine.) Codes Engine Code Likely: L3-VDT (for the 2.3L turbocharged engine) 👋 Introduction Market Position Segment: Compact Performance Hatchback (Hot Hatch) Target Audience: Enthusiast drivers seeking a sporty and practical vehicle. Competitive Analysis Key Competitors: Volkswagen GTI, Subaru WRX, Honda Civic Si, Mitsubishi Lancer Ralliart. Key Features Performance Focus: Turbocharged engine, sporty handling, aggressive styling. Practicality: Five-door hatchback body style offers versatility. 📋 Manual Details Coverage Areas Primary Coverage: Mechanical, electrical, body, and maintenance for the 2007 MazdaSpeed3. Page Count Estimated Page Count: 1500-2000+ pages (typical for comprehensive service manuals of this era) Manual Type Type: Workshop Service and Repair Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine: Complete engine overhaul, diagnosis, fuel injection, ignition, cooling, lubrication, and emissions control systems. Transmission: Manual transmission (MTX) repair, clutch, driveline, axles, and differential. Brakes: Hydraulic system, ABS, brake discs, pads, calipers, lines, and parking brake. Suspension: Front and rear suspension components, shock absorbers, springs, control arms, steering knuckles, and alignment specifications. Steering: Power steering system, steering column, rack and pinion, and tie rods. Electrical: Wiring diagrams, fuse box layouts, battery, starting and charging systems, lighting, power windows, locks, mirrors, and comfort features. Body And Chassis: Body panel repair, interior trim, doors, windows, bumpers, frame repair, and corrosion protection. HVAC: Heating, ventilation, and air conditioning system diagnosis and repair, including refrigerant handling. Diagnostics: OBD-II diagnostic codes, troubleshooting procedures, and diagnostic tool usage. Procedures Included Maintenance: Routine maintenance procedures such as oil changes, filter replacements, fluid checks, and tune-ups. Repair: Detailed step-by-step repair procedures for all major vehicle components and systems. Troubleshooting: Systematic troubleshooting guides for identifying and resolving common and complex vehicle issues. Overhaul: Complete disassembly, inspection, and reassembly procedures for engines, transmissions, and other major components. Wiring Diagrams: Comprehensive electrical wiring diagrams for all vehicle systems. Specifications: Torque specifications, clearances, tolerances, and fluid capacities for all serviceable parts. Technical Depth Depth: Comprehensive; suitable for professional technicians and advanced DIY enthusiasts, covering everything from basic maintenance to complete engine and transmission rebuilds. 📊 Manual Specifications File Format Format: PDF Searchability: Typically text-searchable PDF for easy information retrieval. Print Quality Quality: High-resolution scans suitable for printing. Binding Type Binding: Not applicable (Digital Download) Paper Type Paper Type: Not applicable (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Type Actual: 2.3L DOHC Turbocharged MZR DISI I4 (Direct Injection Spark Ignition) Engine Displacement Actual: 2261 cc (138 cubic inches) Bore X Stroke: 87.5 mm x 94.0 mm (3.44 in x 3.70 in) Performance Horsepower Actual: 263 hp @ 5500 rpm Torque Actual: 280 lb-ft @ 3000 rpm Compression Ratio: 8.5:1 Fuel System Fuel Delivery: Direct Injection (DISI) Fuel Type: Premium Unleaded Gasoline (91 octane or higher recommended) Turbocharger: Mitsubishi TD04-13T turbocharger with intercooler Technical Details Timing Belt Chain: Timing Chain Engine Management System: Mazda Engine Control Unit (ECU) with integrated EGI and ETCS-i 🔧 Transmission Standard Type: 6-speed Manual Transmission (MTX) Optional Type: None offered for this performance variant. Features Gear Ratios: Specific gear ratios are detailed within the manual, typically optimized for sporty driving. Clutch: Hydraulically actuated single dry plate clutch. Differential: Helical Limited-Slip Differential (LSD) for enhanced traction. 📐 Dimensions Exterior Length: 175.0 inches (4445 mm) Width: 70.1 inches (1780 mm) Height: 57.9 inches (1470 mm) Wheelbase: 104.3 inches (2650 mm) Front Track: 60.4 inches (1535 mm) Rear Track: 59.8 inches (1520 mm) Weights Curb Weight: Approx. 3150 lbs (1429 kg) Gross Vehicle Weight Rating: Details available in manual Cargo Cargo Volume Rear Seats Up: Approx. 15.3 cubic feet Cargo Volume Rear Seats Folded: Approx. 40.8 cubic feet 🛡️ Safety Features Ratings NHTSA Frontal Crash Driver: 5-Star NHTSA Frontal Crash...