🏷️ Basic Information Identification Make: BMW Model: 3 Series Sub Models: 325i, 325xi, 328i, 328xi Model Years: 2006, 2007, 2008, 2009, 2010 Codes Chassis Code: E90 (Sedan), E91 (Wagon/Touring), E92 (Coupe), E93 (Convertible) Engine Codes 325: N52B25 (2.5L inline-6) Engine Codes 328: N52B30 (3.0L inline-6) 👋 Introduction Market Position Market Segment: Premium compact executive car segment Competitive Analysis Key Competitors: Audi A4, Mercedes-Benz C-Class, Lexus IS, Infiniti G35/G37 Key Features Driving Dynamics: Renowned for balanced chassis, precise steering, and engaging driving experience characteristic of BMW's 'Ultimate Driving Machine' slogan. Engine Technology: Features BMW's advanced N52 naturally aspirated inline-six engine, praised for its smooth power delivery, efficiency, and innovation (e.g., Valvetronic throttle-less intake technology). All Wheel Drive: Availability of the xDrive all-wheel-drive system on 325xi and 328xi models, enhancing traction and stability in various driving conditions. 📋 Manual Details Coverage Areas Covered Systems: Engine Mechanical, Engine Management, Fuel System, Cooling System, Exhaust System, Drivetrain (Manual & Automatic Transmissions), All-Wheel Drive (xi models), Suspension, Steering, Brakes (ABS, DSC), Body Electrical, HVAC, Chassis, Wiring Diagrams, Diagnostics, Troubleshooting, Lubrication, Maintenance, Routine Service Page Count Estimated Page Count: 1500+ Manual Type Manual Type: Factory Service Manual / Workshop Manual Language Language: English Format Format: Digital Download (PDF) 📖 Manual Coverage Systems Covered Engine Systems: Detailed disassembly, assembly, inspection, and repair procedures for the N52 inline-six engine (2.5L and 3.0L variants), including VANOS, Valvetronic, ignition system, fuel injection, cooling, lubrication, and emission controls. Specific coverage for dual VANOS (Variable Valve Timing). Drivetrain Systems: Complete service and repair information for both manual (e.g., Getrag GS6-37BZ) and automatic transmissions (e.g., ZF 6HP19/6HP26). Includes torque converter, clutch replacement, transmission fluid and filter service, and component-level repairs. Specific coverage for xDrive all-wheel-drive system (transfer case, differentials, drivelines). Brake And Suspension Systems: Detailed procedures for brake system components (pads, rotors, calipers, ABS modulator, DSC sensor calibration), suspension (struts, shocks, control arms, bushings, subframes), and steering systems (power steering pump, rack and pinion, tie rods). Includes wheel alignment specifications. Electrical And Body Systems: Comprehensive wiring diagrams for all vehicle systems, fuse box locations, relay assignments, diagnostic connector pinouts. Covers body control module (BCM), lighting systems (headlights, taillights, interior), power windows, locks, mirrors, and comfort features. Includes diagnostic trouble codes (DTCs) and troubleshooting flowcharts. Procedures Included Maintenance Procedures: Scheduled maintenance items such as oil changes, filter replacements (oil, air, cabin), spark plug replacement, brake fluid flush, coolant flush, drive belt replacement, and drivetrain fluid changes. Includes specific torque specifications for critical fasteners. Diagnostic Procedures: Step-by-step diagnostic strategies for identifying and resolving common and complex issues, including symptom-based troubleshooting guides. Coverage of diagnostic tools and software (e.g., ISTA/D, DIS). Repair And Rebuild Procedures: Detailed instructions for component removal, disassembly, inspection, repair, reassembly, and installation for virtually all major and minor systems of the vehicle, from engine internals to body panel replacement. Technical Depth Depth Of Coverage: Factory-level technical detail, encompassing routine maintenance, component replacement, complex diagnostics, and full system overhauls. Suitable for professional technicians and advanced DIY mechanics. 📊 Manual Specifications File Format File Type: Portable Document Format (PDF) Searchability: Fully searchable text for quick access to information Print Quality Scalability: High-resolution graphics and diagrams, scalable for clarity Binding Type Binding Type: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine 325 Engine Type 325: 3.0L (2996 cc) DOHC 24-valve Inline-6, Naturally Aspirated (N52B30) Bore X Stroke 325: 85.0 mm x 88.0 mm Compression Ratio 325: 10.7:1 Primary Engine 328 Engine Type 328: 3.0L (2996 cc) DOHC 24-valve Inline-6, Naturally Aspirated (N52B30) Bore X Stroke 328: 85.0 mm x 88.0 mm Compression Ratio 328: 10.7:1 Performance 325 Horsepower 325: 215 hp @ 6100 rpm Torque 325: 185 lb-ft @ 2500-4000 rpm Performance 328 Horsepower 328: 230 hp @ 6500 rpm Torque 328: 200 lb-ft @ 2750-4250 rpm Fuel System Fuel Delivery: Electronic Fuel Injection (EFI), Sequential Multi-port Injection (MPI) with Valvetronic intake system Fuel Type: Premium Unleaded (91 octane recommended) Engine Management ECU Type: Bosch Motronic (e.g., ME9.2) 🔧 Transmission Standard Transmission Transmission Type Std: 6-speed Manual Optional Transmission Transmission Type Opt: 6-speed Automatic (Steptronic with paddle shifters) Features Transmission Features: Adaptive transmission control, manual shifting mode (Steptronic), rear-wheel drive (RWD) or xDrive all-wheel drive (AWD) Fluid Specifications Automatic Transmission Fluid: BMW ATF JWS 3309 or Pentosin ATF1 (refer to manual for exact spec based on transmission code) Manual Transmission Fluid: BMW MTF LT-3 or equivalent (e.g., Pentosin MTF2) Transfer Case Fluid Xi: BMW X-drive Transfer Case Fluid (e.g., ATF Dextron III compatible or specific BMW fluid) 📐 Dimensions Exterior Dimensions Sedan E90 Length E90: 180.5 in (4585 mm) Width E90: 69.9 in (1777 mm) Height E90: 56.7 in (1441 mm) Exterior Dimensions Coupe E92 Length E92: 181.7 in (4615 mm) Width E92: 70.2 in (1783 mm) Height E92: 55.5 in (1410 mm) Interior Dimensions Wheelbase: 108.7 in...