🏷️ Basic Information Identification Make: BMW Model: 3 Series Chassis Code: E90 (Sedan), E91 (Wagon/Touring), E92 (Coupe), E93 (Convertible) Model Years: 2006-2010 Codes Engine Codes Covered: N52, N52KP, N51, N54 Transmission Codes Covered: Getrag GS6, ZF GS6, ZF GS6X (Manual), GM GA6L45R, ZF 6HP19 (Automatic) 👋 Introduction Market Position Segment: Premium compact executive sedan, coupe, convertible, and wagon. Known for sporty driving dynamics and refined interiors. Competitive Analysis Competitors: Audi A4, Mercedes-Benz C-Class, Lexus IS, Infiniti G35/G37, Cadillac CTS Key Features Design Philosophy: BMW's 'Ultimate Driving Machine' ethos, rear-wheel-drive bias (with xDrive option), balanced chassis, driver-focused cockpit. E90 Generation Highlights: Introduction of electric power steering on some models, advanced iDrive system (optional), widespread use of lightweight materials. 📋 Manual Details Coverage Areas Primary Coverage: Comprehensive workshop manual for BMW 3 Series E90/E91/E92/E93 models Specific Systems: Engine, Transmission, Suspension, Steering, Brakes, Body, Body Equipment, Electrical System, Equipment and Accessories Page Count Estimated Pages: Varies by specific model and engine variant; typically 1000+ pages for a complete workshop manual. Manual Type Type: Workshop Manual / Service Manual / Repair Manual Language Language: English Format Format: Digital (PDF) 📖 Manual Coverage Systems Covered Engine Systems: Valvetronic, Digital HFM, SULEV-2, Twin-Turbocharged HPI Injection (N54), fuel injection, ignition, cooling, lubrication, exhaust, emissions control Drivetrain Systems: Manual transmission (Getrag/ZF), Steptronic automatic transmission (GM/ZF), clutch, driveshafts, differentials, xDrive all-wheel-drive system Chassis Systems: Front and rear suspension (McPherson strut, multi-link), steering systems (rack and pinion, electric power steering), brake systems (ABS, DSC, EBD, vented discs), wheel alignment Electrical Systems: Wiring diagrams, fuse boxes, lighting, power windows, central locking, climate control, diagnostic connectors (OBD-II), ECU functions Body And Interior: Body panels, doors, hinges, locks, interior trim, seats, airbags, convertible top mechanisms (E93) Procedures Included Maintenance Procedures: Oil changes, filter replacements (oil, air, cabin), spark plug replacement, brake fluid flush, coolant flush, differential fluid change, transmission fluid change Repair Procedures: Engine component removal and installation (e.g., cylinder head, pistons, camshafts), transmission overhaul, clutch replacement, brake caliper/rotor replacement, suspension component replacement, steering rack replacement Diagnostic Procedures: Troubleshooting guides for common symptoms, fault code interpretation (DTCs), diagnostic tool usage, electrical system diagnostics Special Procedures: Valve cover gasket replacement, oil pan gasket replacement, VANOS system diagnosis, specific torque specifications, timing chain service (N52/N54) Technical Depth Depth: Detailed, in-depth coverage suitable for professional technicians and experienced DIY enthusiasts. Includes diagnostic flowcharts, schematics, and overhaul procedures. 📊 Manual Specifications File Format Digital Format: Searchable PDF with high-resolution diagrams and schematics. Print Quality Print Readability: Optimized for clarity and readability when printed, with clear line drawings and legible text. Binding Type Binding Physical: N/A (Digital Format) Paper Type Paper Physical: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine N52 3.0L I6: Naturally aspirated, 2996cc, 230-255 hp, 236-258 lb-ft torque. Valvetronic variable valve lift and timing. Magnesium/aluminum alloy engine block. N52Kp 3.0L I6: Variant of N52 with updated engine management (Digital HFM), similar power output. N51 3.0L I6: LEv / SULEV variant of the N52, typically slightly lower power output (e.g., 210-230 hp) to meet emissions standards. N54 3.0L I6 Twinturbo: Twin-turbocharged, direct injection, 2979cc, 300-320 hp, 300-330 lb-ft torque. Known for strong power delivery and responsiveness. Performance Horsepower Range: 210 hp (N51) to 320 hp (N54 models) Torque Range: 210 lb-ft (N51) to 330 lb-ft (N54 models) Fuel System Injection Type: Port Injection (N51, N52, N52KP), Direct Injection (N54) Fuel Type: Premium Unleaded Gasoline (91 AKI or higher recommended) 🔧 Transmission Standard Manual Transmission: 6-Speed Manual (Getrag GS6-37BG / ZF GS6-37BZ / ZF GS6X37DZ) Optional Automatic Transmission: 6-Speed Steptronic Automatic (GM GA6L45R or ZF 6HP19) Features Transmission Features: Manual offers precise shifting. Steptronic allows manual selection of gears via shifter or paddles (optional). xDrive models utilize specific AWD transmissions. 📐 Dimensions Exterior Wheelbase E90: 108.7 inches (2760 mm) Wheelbase E91: 107.7 inches (2735 mm) Wheelbase E92 E93: 108.7 inches (2760 mm) Length E90: 180.6 inches (4587 mm) Length E91: 181.1 inches (4599 mm) Length E92: 181.0 inches (4598 mm) Length E93: 182.2 inches (4628 mm) Cargo Trunk Volume E90 E92: Approx. 12.0 - 12.4 cu ft (339 - 351 L) Trunk Volume E91: Approx. 17.7 cu ft (505 L) with rear seats up, 56.0 cu ft (1586 L) with rear seats folded. Weights Curb Weight Range: Approx. 3450 - 3800 lbs (1565 - 1724 kg), varies significantly by model and drivetrain. Gross Vehicle Weight Rating: Typically around 4500 - 4800 lbs (2041 - 2177 kg) 🛡️ Safety Features Ratings NHTSA Ratings: Generally good ratings, often 4 or 5 stars in frontal and side impact tests for relevant model years. (Specific ratings vary by year and body style). IIHS Ratings: Often received 'Good' ratings in crashworthiness tests, Top Safety Pick designations for certain configurations. Active Features Active Safety: Dynamic Stability Control (DSC), Anti-lock Braking System (ABS), Electronic Brake-force Distribution (EBD), Brake Assist, Traction Control (ASC/TCS) Optional Active...