Segment:
Compact Executive Sedan/Coupe
Brand Image:
Performance, Luxury, Driving Dynamics
Competitors:
Audi A4, Mercedes-Benz C-Class, Lexus IS, Acura TL
Handling:
Renowned for its balanced chassis and responsive steering
Powertrain:
Smooth inline-six engine with ample torque
Interior Design:
Driver-focused cockpit, premium materials
Purpose:
Provide detailed repair and maintenance instructions for the BMW 328i (E46) by certified technicians.
Engine:
Complete overhaul, diagnostics, cooling, lubrication, fuel, ignition, emissions
Transmission:
Manual and Automatic: Overhaul, diagnostics, fluid service, torque converter
Drivetrain:
Driveshaft, differential, axles, wheel bearings
Suspension:
Front and Rear: Struts, shocks, control arms, bushings, alignment
Steering:
Power steering system, steering rack, tie rods
Brakes:
Hydraulic system, ABS, DSC, brake pads, rotors, calipers, bleeding
Electrical:
Wiring diagrams, battery, alternator, starter, lighting, ECUs, sensors
Bodywork:
Body panels, doors, locks, windows, convertible roof (if applicable)
HVAC:
Air conditioning, heating, climate control systems
Interior:
Seats, trim, airbags, dashboard
Maintenance:
Oil changes, filter replacements, fluid checks, tune-ups, spark plugs
Troubleshooting:
Diagnostic procedures, fault code interpretation, common problem resolution
Repair:
Component replacement, system overhauls, gasket/seal replacement
Diagnostics:
OBD-II procedures, sensor testing, ECU diagnostics
Depth:
Full workshop level, suitable for professional mechanics and advanced DIY enthusiasts
Type:
5-Speed Manual (Getrag 250)
Type:
5-Speed Automatic (Steptronic)
Clutch Type:
Hydraulic, single dry plate
Manual Fluid:
BMW MTF LT-1 or LT-2 (refer to manual for exact spec)
Automatic Fluid:
ATF LT 71141 (Dexron III equivalent not always suitable)
NHTSA Front Impact:
4-Star (Driver and Passenger)
IIHS Side Impact:
Good (for models with side airbags)
Traction Control:
Dynamic Stability Control (DSC) standard
Anti Lock Brakes:
Anti-lock Braking System (ABS) standard
Airbags:
Frontal airbags, optional front side-impact airbags
Seatbelts:
Pretensioner seatbelts with force limiters
Head Unit:
BMW Business CD, BMW Professional CD (optional navigation)
Audio System:
Harman Kardon premium audio optional
Cruise Control:
Standard cruise control, optional adaptive cruise control (less common)
Phone Integration:
Optional Bluetooth preparation, voice control (with navigation)
Oil Change Interval:
Condition Based Service (CBS) or 7,500-15,000 miles (consult manual)
Spark Plug Replacement:
Approx. 100,000 miles (NGK BKR6EQUP recommended)
Coolant Flush:
Every 2-4 years or 30,000-50,000 miles
Engine Oil:
BMW High Performance Synthetic SAE 5W-30 (e.g., BMW Longlife-01 compliant)
Engine Oil Capacity:
6.9 US quarts (6.5 Liters)
Coolant:
BMW Blue Antifreeze/Coolant (G48)
Cooling System:
Plastic expansion tank cracking, water pump failure (often plastic impeller)
Oil Leaks:
Valve cover gasket, oil pan gasket, oil filter housing gasket (O-rings)
Suspension:
Front control arm bushings, rear shock mounts, sway bar links
Electrical:
ABS/DSC wheel speed sensor failure, VANOS solenoid issues
Maintenance Schedule Availability
Availability:
Comprehensive schedules provided for all maintenance items.
Car And Driver Ten Best:
1999-2000 (for the E46 generation overall)
Jd Power Dependability:
Varies by year, generally good for segment
Safety Certification:
DOT, NHTSA (US standards), Euro NCAP (European standards)
