🏷️ Basic Information Identification Make: BMW Model: 325i Generation: E46 Production Years Covered: 1999, 2000, 2001, 2002, 2003, 2004, 2005 Codes Chassis Code: E46 👋 Introduction Market Position Segment: Premium compact executive sedan/coupe. Target Audience: Enthusiasts seeking performance, luxury, and advanced engineering, as well as owners prioritizing self-maintenance and understanding of their vehicle. Competitive Analysis Competitors: Mercedes-Benz C-Class, Audi A4, Lexus IS, Acura TL, Infiniti G35. Key Features Driving Dynamics: Renowned for BMW's signature 'Ultimate Driving Machine' characteristics: precise steering, balanced chassis, engaging handling. Powertrain: Smooth and powerful inline-six engines, available with manual or Steptronic automatic transmissions. Interior Design: Driver-focused cockpit, high-quality materials, ergonomic layout. 📋 Manual Details Coverage Areas Manual Type: Full Service and Repair Manual Language: English Format: Digital (likely PDF, based on typical industry offerings) Page Count Estimated Page Count: Varies by publisher, typically 800-1500+ pages for comprehensive E46 manuals. 📖 Manual Coverage Systems Covered Engine: Engine mechanical, engine electrical, cooling system, fuel system, exhaust system, lubrication system, engine management (DME). Transmission: Manual transmission (Getrag), Automatic transmission (Steptronic), clutch, driveline, driveshafts, differential. Brakes: Hydraulic system, ABS (Anti-lock Braking System), DSC (Dynamic Stability Control), brake discs, pads, calipers, lines, parking brake. Suspension: Front and rear suspension components, shock absorbers, struts, springs, control arms, sway bars, steering linkage. Electrical: Complete electrical system, battery, charging system, starter, lighting, instruments, wipers, power windows, power locks, central locking, alarm system, fuse box diagrams, wiring diagrams. Body: Body panels, doors, windows, bumpers, interior trim, HVAC (Heating, Ventilation, and Air Conditioning) system, seats, airbags. Diagnostics: On-Board Diagnostics (OBD-II) system, diagnostic trouble codes (DTCs), diagnostic procedures, troubleshooting charts. Procedures Included Maintenance: Oil changes, filter replacements, spark plug replacement, fluid checks and changes, brake service, tire rotation, belt inspection and replacement, battery maintenance. Repair: Engine tune-ups, component replacement (e.g., alternator, water pump, starter), transmission repair, brake system repair, suspension component replacement, electrical component diagnosis and replacement, body panel repair, HVAC system repair. Troubleshooting: Diagnostic flowcharts for common issues, symptom-based troubleshooting, wiring diagram interpretation for electrical faults. Specifications: Torque specifications, fluid capacities and types, alignment specifications, electrical specifications. Technical Depth Depth: Comprehensive, covering everything from basic maintenance to in-depth repairs and diagnostics. Suitable for DIY enthusiasts and professional technicians. 📊 Manual Specifications File Format File Type: Likely PDF (Portable Document Format) for digital versions. Searchability: Typically text-searchable for quick access to information. Print Quality Illustrations: Detailed diagrams, exploded views, and clear illustrations. Binding Type Binding: If printed, typically spiral-bound or perfect-bound for durability and lay-flat usability. Paper Type Paper Quality: If printed, usually on durable, high-quality paper suitable for workshop environments. ⚙️ Engine Specifications Primary Engine Engine Code: M54B30 (for 325i) / M54B25 (for earlier 325i models in some markets, though B30 became more common for the 325i designation during this E46 lifespan) Engine Type: Naturally aspirated inline-six, DOHC, 24 valves Displacement: 2.5 Liters (2494 cc) or 3.0 Liters (2979 cc) depending on the specific model year and market interpretation of '325i' which transitioned to the 3.0L M54B30 engine in later years of the E46 production run, often designated as 325i. Performance Horsepower: Approximately 184 hp (137 kW) for 2.5L / Approximately 225 hp (168 kW) for 3.0L (M54B30) Torque: Approximately 236 Nm (174 lb-ft) for 2.5L / Approximately 285 Nm (210 lb-ft) for 3.0L (M54B30) Fuel System Fuel Delivery: Sequential multi-port fuel injection (Bosch Motronic DME) Fuel Type: Premium Unleaded (91 octane or higher recommended) Engine Management ECM: Bosch Motronic ME 7.2 Emission Control: Secondary air injection system, catalytic converters, evaporative emission control (EVAP). 🔧 Transmission Standard Type: 5-speed Manual Transmission (Getrag S5D-250G) Optional Type: 5-speed Automatic Transmission with Steptronic function (GM A5S325Z) Features Clutch: Hydraulically actuated single-plate dry clutch. Driveline: Rear-wheel drive (RWD). Differential: Open differential, with limited-slip differential (LSD) as a rare factory option or aftermarket upgrade. 📐 Dimensions Exterior Length: Approx. 4,471 mm (176.0 in) Width: Approx. 1,739 mm (68.5 in) Height: Approx. 1,415 mm (55.7 in) Wheelbase: Approx. 2,725 mm (107.3 in) Weights Curb Weight: Approx. 1,450 - 1,550 kg (3,197 - 3,417 lbs), depending on transmission and options. Cargo Trunk Volume: Approx. 440 liters (15.5 cu ft) Wheels Tires Wheel Bolt Pattern: 5 x 120 mm Standard Wheel Size: 16-inch (e.g., 7Jx16 ET47) Optional Wheel Size: 17-inch (e.g., 7.5Jx17 ET41 or 8Jx17 ET50) Standard Tire Size: 205/55R16 Optional Tire Size: 225/45R17 (front), 245/40R17 (rear) for 17-inch wheels. 🛡️ Safety Features Ratings NHTSA Front Impact: Likely 4 out of 5 stars (based on typical E46 testing for similar models, exact rating may vary slightly by year and testing protocols). IIHS Side Impact: Good (based on typical E46 testing for similar models, exact rating may vary). Active Features ABS: Standard Anti-lock Braking System. Dsc: Standard Dynamic Stability Control (later iterations often included traction control). Traction Control: Often integrated with DSC, or available as a separate system. Passive Features Airbags: Frontal airbags for driver...