Segment:
Compact Executive Sedan/Coupe
Competitors:
Mercedes-Benz C-Class, Audi A4, Lexus IS, Infiniti G35
Reputation:
Renowned for sporty handling, refined interiors, and advanced engineering
Target Audience:
Driving enthusiasts, professionals, individuals seeking premium performance and quality
Engine:
All engine variants, including diagnosis, overhaul, and component testing
Drivetrain:
Transmission (manual/automatic), clutch, driveshafts, differential, AWD system (if applicable)
Suspension:
Front and rear suspension, steering system, alignment specifications
Brakes:
Brake system components, ABS, DSC, fluid replacement, caliper overhaul, rotor specifications
Electrical System:
Wiring diagrams, ECU diagnosis, lighting, starting and charging systems, comfort electronics
Bodywork:
Body panel removal and installation, collision repair, interior trim, glass replacement
HVAC:
Heating, ventilation, and air conditioning system diagnosis and repair
Fuel System:
Fuel pump, injectors, fuel lines, evaporative emissions control system
Chassis And Body:
Frame, body panels, doors, windows, convertible top mechanism (if applicable)
Wheels And Tires:
Wheel specifications, tire pressure monitoring system (if equipped), wheel bearing replacement
Maintenance:
Routine maintenance tasks, oil changes, filter replacements, fluid checks
Troubleshooting:
Diagnostic procedures for common faults and error codes
Repair:
Step-by-step instructions for component removal, installation, and repair
Overhaul:
Detailed instructions for engine and transmission rebuilding
Specifications:
Torque specifications, tolerances, clearances, alignment data
Diagnostic Trouble Codes:
Explanation of DTCs, diagnostic flowcharts, and testing procedures for various modules (DME, EGS, ABS/DSC, etc.)
Depth:
Expert-level, covering both routine servicing and complex diagnostics/repairs
Engine Management:
Detailed coverage of DME (Digital Motor Electronics) functions, sensor testing, and actuator diagnosis
Electrical Diagrams:
Comprehensive, system-specific wiring schematics
Engine Type:
Inline-6 Cylinder, Naturally Aspirated
Displacement:
2979 cc (3.0 Liters)
Bore X Stroke:
84 mm x 89.6 mm
Compression Ratio:
10.2:1
Horsepower:
225 hp @ 6000 rpm (approx.)
Torque:
214 lb-ft @ 3500 rpm (approx.)
Fuel Delivery:
Sequential Multi-Point Fuel Injection (EFI)
Fuel Type:
Premium Unleaded Gasoline (91 Octane or higher recommended)
Emission Control:
Dual Three-Way Catalytic Converters, Secondary Air Injection
NHTSA Front Crash:
4 Stars (Driver & Passenger)
NHTSA Side Impact:
4 Stars (Front & Rear Passenger)
Traction Control:
Dynamic Stability Control (DSC)
Braking System:
Anti-lock Braking System (ABS), Electronic Brake-force Distribution (EBD)
Airbags:
Frontal airbags (driver/passenger), side-impact airbags (front)
Seatbelts:
3-point inertia-reel seat belts with pre-tensioners and force limiters
Head Unit:
Business CD, Professional CD, or optional Navigation system (MKIV)
Audio Options:
Various speaker configurations, optional Harman Kardon sound system
Stability Control:
Standard Dynamic Stability Control (DSC)
Parking Assistance:
Optional Rear Park Distance Control (PDC)
Bluetooth:
Optional Bluetooth hands-free system
Auxiliary Input:
Available on some models/head units, or via aftermarket adapter
Oil Change:
Variable, typically every 7,500-15,000 miles or 12 months, based on 'Condition Based Service' (CBS)
Oil Filter Replacement:
At every oil change
Engine Air Filter:
Inspect every 15,000 miles, replace as needed (typically 30,000-45,000 miles)
Cabin Air Filter:
Replace annually or every 15,000 miles
Spark Plugs:
Typically every 60,000 miles (check specific type)
Engine Oil Type:
BMW Longlife-01 (LL-01) approved synthetic oil, SAE 0W-30 or 0W-40
Engine Oil Capacity:
6.5 US quarts (6.2 Liters) with filter change
Coolant:
BMW Coolant/Antifreeze (Blue), 50/50 mixture with distilled water
Brake Fluid:
DOT 4 BMW High Performance Brake Fluid
Transmission Fluid Manual:
MTF LT-2 (BMW original) or equivalent high-quality gear oil
Transmission Fluid Automatic:
ATF LT 71141 (BMW original) or equivalent (e.g., Esso JWS 3309)
Common Issues Engine:
CCV (Crankcase Ventilation) system failure (oil leaks, rough idle), VANOS (Variable Valve Timing) solenoid issues, coolant expansion tank leaks, oil pan gasket leaks
Common Issues Suspension:
Worn front control arm bushings, sagging rear springs, rear subframe bushings
Common Issues Electrical:
ABS/DSC module failures, window regulator failures, headlight condensation
Common Issues Cooling:
Water pump failure (often plastic impeller), thermostat housing leaks
Brand Philosophy:
Sheer Driving Pleasure, performance, engineering excellence
Chassis Generation:
E46 generation (1998-2006)
Facelift:
E46 facelift in 2001 (though 2004 model is post-facelift with updated styling and features)
Manufacturing Plant:
Various BMW plants globally, notably Dingolfing, Germany
