Varies by engine (e.g., M3: 11.3:1, M52TU: 10.2:1)
Fuel System
Type:
Bosch Motronic Electronic Fuel Injection (EFI), Sequential Port Injection
Fuel Type:
Premium Unleaded Gasoline (91 Octane or higher recommended)
Lubrication
Oil Type:
Refer to manual for specific viscosity grades (e.g., BMW High Performance SAE 5W-30 or 0W-40 Synthetic)
Oil Capacity:
Varies by engine (approx. 6.5 - 7.5 liters)
🔧 Transmission
Standard
Type:
5-speed Manual (Getrag 420G for M3, ZF S5D for others)
Optional
Type:
5-speed Steptronic Automatic
Features
Clutch Type:
Hydraulic actuated single dry plate clutch
Fluid Type
Manual:
Refer to manual for specific gear oil specification (e.g., SAE 75W-90 GL-4/GL-5)
Automatic:
Refer to manual for specific ATF specification (e.g., Dexron III/Mercon or equivalent)
📐 Dimensions
Exterior
Wheelbase:
107.4 inches (2728 mm)
Length:
Approx. 177-183 inches (4500-4650 mm) depending on model
Width:
Approx. 68-70 inches (1730-1780 mm)
Height:
Approx. 54-56 inches (1370-1420 mm)
Weights
Curb Weight:
Varies by model and transmission (approx. 3100-3500 lbs / 1400-1600 kg)
Gross Vehicle Weight Rating:
Refer to vehicle placard
Wheels Tires
Bolt Pattern:
5 x 120 mm
Tire Sizes:
Varies by model/trim (e.g., 225/45R17, 245/40R17 for M3)
🛡️ Safety Features
Ratings
NHTSA:
Refer to NHTSA archives for specific model year and crash test results; typically good for its era.
Active Features
ABS:
Standard Anti-lock Braking System
Asc T:
Optional Automatic Stability Control + Traction (ASC+T)
Passive Features
Airbags:
Driver and front passenger airbags, optional side airbags
Seatbelts:
Three-point seat belts with pretensioners
💡 Technology Features
Infotainment
Head Unit:
Factory BMW Business CD or Professional RDS CD/Radio units. Optional navigation systems available.
Speakers:
Standard 6-speaker system, optional premium Hi-Fi system with amplifier.
Driver Assistance
Cruise Control:
Standard on most models.
Parking Assistance:
Optional rear parking sensors available on some models.
Connectivity
Phone Integration:
Optional Bluetooth preparation or cradle systems.
🔧 Maintenance
Service Intervals
Oil Change:
Varies based on driving conditions and oil quality, typically 7,500 to 15,000 miles or annually. BMW's Condition Based Service (CBS) system monitors needs.
Spark Plugs:
Typically at 60,000 - 100,000 miles depending on plug type.
Coolant Flush:
Every 2-4 years or per manual recommendation.
Fluid Specifications
Brake Fluid:
DOT 4
Power Steering Fluid:
Refer to manual (often ATF or specific hydraulic fluid)
Known Issues
Cooling System:
Plastic expansion tank prone to cracking, water pump failure (especially plastic impeller), thermostat housing leaks.
Vanos:
Sealing rings can degrade, leading to rough idle, loss of low-end torque, and increased oil consumption (especially on M52TU and M54 engines).
Suspension:
Control arm bushings (RTABs and FCABs), ball joints, and rear shock mounts can wear out, affecting handling and causing clunks.
Oil Leaks:
Valve cover gasket, oil pan gasket, and oil filter housing gasket are common leak points.
Electrical:
Window regulators, ABS sensors, and ignition coil failures.
📚 Vehicle History
Brand Heritage
Legacy:
BMW's long-standing reputation for building driver-focused, high-performance vehicles.
Model Evolution
Generation:
E46 generation of the 3 Series, known for significant improvements in chassis rigidity, suspension design, and engine technology over its predecessor (E36).
Introduction Year:
E46 generation introduced in 1998 for the 1999 model year.
Production
Manufacturing Locations:
Germany (Dingolfing, Munich), South Africa, Mexico
🏆 Awards & Recognition
Recognitions
Car And Driver:
Car and Driver's '10Best' list multiple times, particularly for the M3 model.
Motor Trend:
Often praised by automotive journalists for its performance and handling characteristics.
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