Segment:
Entry-level luxury sport sedan
Competitors 2004:
Audi A4, Mercedes-Benz C-Class, Lexus IS, Infiniti G35
Driving Dynamics:
Renowned for balanced chassis, rear-wheel drive platform, and engaging driving experience.
Powertrain Options:
Powerful inline-six engines, available with manual or automatic transmissions.
Interior Quality:
Premium materials, driver-focused cockpit, excellent ergonomics.
Target Audience:
BMW owners seeking to perform their own maintenance and repairs, independent repair shops.
Engine Mechanical:
Engine assembly, cylinder head, valve train, crankshaft and piston assembly, lubrication system, cooling system, fuel injection system, exhaust system, engine management (DME)
Engine Electrical:
Ignition system, starter system, charging system, engine sensors, ECU diagnostics
Transmission Manual:
Manual transmission (Getrag 420G for 330i) overhaul, clutch system, shift linkage
Transmission Automatic:
Automatic transmission (GM 5L40-E) overhaul, torque converter, hydraulic control, mechatronics
Drivetrain:
Driveshaft, universal joints, differential, rear axle, axle shafts
Suspension:
Front suspension (MacPherson strut, multi-link), rear suspension (multi-link), springs, shock absorbers, control arms, wheel bearings
Steering:
Power steering system, steering rack, steering column, steering angle sensor
Brakes:
Front and rear disc brakes, ABS system (Bosch 5.7), DSC (Dynamic Stability Control), brake fluid, brake lines, calipers, master cylinder
Electrical System:
Battery, alternator, starter, lighting systems (headlights, taillights, interior), fuses and relays, wiring diagrams, CAN bus system
Body Exterior:
Body panels, doors, hood, trunk, bumpers, mirrors, sunroof, chassis alignment
Body Interior:
Seats, dashboard, trim panels, HVAC system, SRS airbag system, seat belts, interior lighting
Climate Control:
Air conditioning system, heating system, blower motor, evaporator, condenser, refrigerant (R134a)
Infotainment:
Radio, CD player, navigation system (CCC), speaker systems
Maintenance Tasks:
Oil and filter changes, air filter replacement, spark plug replacement, cabin air filter replacement, brake fluid flush, coolant flush, transmission fluid change, differential fluid change
Diagnostic Procedures:
Troubleshooting guides for common issues, diagnostic trouble codes (DTCs) and their meanings, use of BMW diagnostic tools (e.g., DIS, ISTA - conceptual understanding)
Repair Procedures:
Step-by-step instructions for component removal and installation (engine components, suspension parts, brake assemblies, interior trim, electrical modules)
Overhaul Procedures:
Complete engine rebuild, transmission overhaul, differential rebuild
Electrical Diagnostics:
Wiring diagram interpretation, troubleshooting electrical faults, component testing
Depth:
Comprehensive, covering routine maintenance to complete engine and transmission overhauls, including detailed diagnostics and specifications.
NHTSA Front Impact Driver:
4-Star (2004 model year)
NHTSA Front Impact Passenger:
4-Star (2004 model year)
IIHS Moderate Overlap Frontal Offset:
Good (2004 model year)
ABS:
Standard Anti-lock Braking System (ABS)
Dsc:
Standard Dynamic Stability Control (DSC)
Traction Control:
Automatic Traction Control (ASC+T) integrated with DSC
Airbags:
Frontal airbags, front side-impact airbags, front and rear head protection system (HPS) curtain airbags
Seatbelts:
3-point inertia-reel seat belts with pretensioners and force limiters
Rollover Protection:
Integrated roll-over protection system (structure)
Oil Change Interval:
Typically every 10,000-15,000 miles or 12 months, as indicated by the Condition Based Service (CBS) system.
Engine Oil Type:
BMW Longlife-01 (LL-01) synthetic oil, 5W-30 or 0W-30 recommended. Check owner's manual for exact specification.
Engine Oil Capacity:
6.5 US quarts (6.2 Liters) with filter change
Spark Plug Replacement:
Approximately every 60,000 miles (check manual for specific plug type and interval)
Coolant Flush Interval:
Every 2 years or 30,000 miles
Coolant Type:
BMW Blue Antifreeze/Coolant (G48 ethylene glycol based) or equivalent
Brake Fluid Type:
DOT 4 (BMW High Performance Brake Fluid)
Power Steering Fluid:
CHF 11S (Pentosin) or BMW Power Steering Fluid
Common Problems E46:
Vibration damper failure, cooling system leaks (water pump, thermostat housing, expansion tank), VANOS solenoid issues, subframe cracks (less common on 330i than earlier models but still possible), oil filter housing gasket leaks, CCV (Crankcase Ventilation) system issues
Specific 330I Issues:
While robust, potential for VANOS rattle if maintenance is neglected; early plastic coolant system components may degrade over time.
Oil Filter Oem:
BMW Part No. 11421460844 (example, verify with VIN)
Air Filter Oem:
BMW Part No. 13721438670 (example, verify with VIN)
Cabin Filter Oem:
BMW Part No. 64116904760 (example, verify with VIN)
Bmw Philosophy:
The Ultimate Driving Machine, emphasizing performance, engineering, and driver engagement.
E46 Generation:
The E46 generation of the 3 Series, produced from 1998 to 2006, is highly regarded for its driving dynamics and build quality.
330I Positioning:
The 330i represented the higher-performance, naturally aspirated engine option in the 3 Series lineup for this year, succeeding the 328i.
Manufacturing Location:
Germany (primarily Dingolfing and Munich plants)
Production Years E46:
1998-2006 (Sedan, Coupe, Convertible, Wagon variants)