Segment:
Compact Executive Sedan/Wagon (E46 chassis)
Key Selling Points:
Performance, handling, luxury, advanced technology for its era, all-wheel-drive capability (xi models).
Key Competitors:
Mercedes-Benz C-Class (W203), Audi A4 (B6), Lexus IS300, Acura TL.
Performance Focus:
Balanced chassis, responsive engine, engaging driving dynamics.
AWD Capability:
xDrive system provides enhanced traction and stability in various weather conditions.
Powertrain:
Engine mechanicals (M54B30), cooling system, fuel system, exhaust system, ignition system, engine management (DME), drivetrain (xDrive AWD system), transmission (GM A5S360R automatic, Getrag 420G manual - if applicable to 325i, but xi primarily auto for this year)
Chassis:
Suspension (front struts, rear multi-link), steering system (hydraulic power steering), brakes (ABS, DSC, brake pad/rotor replacement), wheels and tires
Electrical:
Body control module (BCM), comfort access systems, lighting (headlights, taillights), instrumentation, audio system, power accessories (windows, locks, mirrors), wiring diagrams for all systems
Body:
Exterior body panels, interior trim, seats, sunroof, bumpers, glass replacement, door mechanisms
Routine Maintenance:
Oil change, filter replacement, fluid checks and top-offs, spark plug replacement, brake fluid flush, coolant flush, belt inspection/replacement
Diagnostic Troubleshooting:
Symptom-based troubleshooting guides, fault code interpretation, electrical system diagnostics, engine performance issues
Component Repair:
Engine rebuild (detailed), transmission overhaul, suspension component replacement, brake caliper service, starter motor replacement, alternator service
Special Procedures:
xDrive all-wheel-drive system service, differential service, DSC (Dynamic Stability Control) calibration, VANOS (Variable Valve Timing) system repair, DME (Digital Motor Electronics) programming/coding (basic level)
Depth:
Comprehensive factory-level technical information, suitable for professional technicians and advanced DIY enthusiasts.
Searchability:
Typically searchable text within the PDF for quick access to information.
Printability:
Designed for printing, allowing users to print individual sections or the entire manual.
Binding Type:
N/A (Digital Download - Print yourself)
Paper Type:
N/A (Digital Download - Print yourself)
Engine Type:
Inline 6-cylinder, naturally aspirated
Displacement:
2,979 cc (3.0 liters)
Bore X Stroke:
84.0 mm x 89.6 mm
Compression Ratio:
10.2:1
Horsepower:
225 hp @ 6,100 rpm
Torque:
214 lb-ft @ 3,500 rpm
Fuel Delivery:
Multi-point fuel injection (Bosch Motronic ME9.2)
Fuel Type:
Premium Unleaded Gasoline (91 octane or higher recommended)
Valve Train:
Dual Overhead Camshafts (DOHC), 24 valves, VANOS on intake and exhaust camshafts
Type:
5-speed Automatic (GM A5S360R)
Type:
5-speed Manual (Getrag 420G - often found on 325i, less common on xi)
Drive System:
xDrive All-Wheel Drive with electronic power distribution
Automatic Transmission Fluid:
BMW ATF LT-3 (Pentosin ATF1 or equivalent, check specific VIN for precise spec)
Automatic Transmission Fluid Capacity:
Approximately 9-10 liters (for a full refill/rebuild, partial fill will be less)
Wheelbase:
107.4 inches (2,728 mm)
Length:
177.4 inches (4,506 mm)
Width:
68.3 inches (1,735 mm)
Height:
55.7 inches (1,415 mm)
Curb Weight:
Approximately 3,400 - 3,600 lbs (depending on body style and options)
Gross Vehicle Weight Rating:
Approximately 4,400 - 4,600 lbs
Trunk Capacity:
Approximately 13.6 cu ft (sedan)
NHTSA Frontal Impact Driver:
5 Stars
NHTSA Frontal Impact Passenger:
5 Stars
IIHS Front Crash Rating:
Good
Traction Control:
Dynamic Traction Control (DTC) / Automatic Stability Control (ASC+T)
Stability Control:
Dynamic Stability Control (DSC)
Braking System:
Anti-lock Braking System (ABS), Electronic Brake Force Distribution (EBD), Brake Assist
Airbags:
Front airbags (driver and passenger), optional side-impact airbags, optional head protection airbags.
Seatbelts:
3-point seatbelts with pretensioners and force limiters, LATCH child seat anchors.
Audio System:
BMW Business CD or Professional CD radio with AM/FM, CD player. Optional Harman Kardon sound system.
Navigation:
Optional BMW Professional Navigation system (older generation with CD-ROM based maps).
Stability Control:
Dynamic Stability Control (DSC) standard on xi models, often optional on RWD.
Parking Assistance:
Optional Park Distance Control (PDC) - front and rear sensors.
Cellular:
Optional BMW Assist with Telematics (early form of connected services).
HVAC:
Manual or optional Automatic Climate Control with digital display and recirculation function.
Oil Change Interval:
BMW Condition Based Service (CBS) system typically recommends every 7,500-15,000 miles or annually, whichever comes first. Refer to manual for exact CBS triggers.
Air Filter Replacement:
Typically every 30,000 miles or as indicated by CBS.
Cabin Filter Replacement:
Typically every 15,000-30,000 miles or annually.
Spark Plug Replacement:
Typically around 100,000 miles (long-life plugs).
Engine Oil Specification:
BMW Longlife-01 (LL-01) or Longlife-04 (LL-04) synthetic oil, SAE 5W-30 or 0W-30 depending on climate. Consult owner's manual or VIN specific data.
Coolant Specification:
BMW Blue Antifreeze/Coolant (G48 ethylene glycol based) mixed 50/50 with distilled water.
Brake Fluid Specification:
DOT 4 LV (Low Viscosity) BMW High Performance Brake Fluid.
Cooling System:
Plastic expansion tank prone to cracking, water pump failure (especially plastic impeller models), coolant hose leaks.
Engine Management:
VANOS solenoids and seals can fail, leading to rough idle and performance issues. Crankshaft position sensor failures are common.
Suspension:
Front control arm bushings and ball joints wear out, leading to steering wander and clunks. Rear subframe bushings can also fail.
Electrical:
Water pump failure can trigger various electrical issues due to its integration with the DME. Window regulator failures.
Bmw Philosophy:
Sheer Driving Pleasure - focus on performance, engineering, and driver engagement.
E46 Generation:
Third generation of the BMW 3 Series, produced from 1998 to 2006. Known for its chassis balance and driving dynamics.
Xi Introduction:
The 'xi' designation signifies BMW's all-wheel-drive system, introduced to the 3 Series lineup to compete in markets with inclement weather and offer enhanced stability.
Manufacturing Location:
Various BMW plants, including Dingolfing, Germany.
Car And Driver:
Often featured on Car and Driver's 10Best lists in previous generations, with the E46 praised for its driving dynamics.
Konsumen Reports:
Consistently rated well for performance and luxury, though reliability ratings varied by specific components and model years.
Safety Certifications:
Meets or exceeds all US Federal Motor Vehicle Safety Standards (FMVSS) for the 2003 model year.
