Model Generation:
E90/E91/E92/E93
Model Years Covered:
2006, 2007, 2008, 2009, 2010
Chassis Codes:
E90 (Sedan), E91 (Wagon/Touring), E92 (Coupe), E93 (Convertible)
Segment:
Sport Sedan/Coupe/Convertible, Premium Performance
Target Audience:
Enthusiast drivers, performance-oriented buyers, luxury segment
Key Competitors:
Audi A4, Mercedes-Benz C-Class, Lexus IS, Infiniti G37
Model Defining Features:
Twin-turbocharged inline-six engine (N54), rear-wheel-drive bias, sophisticated chassis dynamics, premium interior appointments
Manual Value Proposition:
Provides in-depth technical knowledge essential for maintaining and repairing BMW's complex N54 engine and advanced electronic systems.
Primary Coverage:
Service, Repair, Workshop
Scope:
Comprehensive, including diagnostics, maintenance, repair, and overhaul
Estimated Page Count:
1500+
Type:
Service and Repair Workshop Manual
Powertrain:
Engine (N54), Fuel System, Exhaust System, Cooling System, Lubrication System
Drivetrain:
Transmission (Manual & Automatic), Driveline, Differentials, Axles
Chassis:
Suspension (Front & Rear), Steering System, Brakes (ABS, DSC), Wheels & Tires
Electrical:
Engine Control Unit (ECU), Body Control Module (BCM), Lighting, Power Accessories, Infotainment, Diagnostic Systems
Body:
Exterior Body Panels, Interior Trim, Doors, Windows, Convertible Top (where applicable)
Maintenance:
Scheduled maintenance, oil changes, filter replacements, spark plug replacement, fluid checks and changes
Repair:
Engine repair and overhaul, transmission service, brake system repairs, suspension component replacement, electrical diagnostics and repair
Diagnostics:
Troubleshooting guides, diagnostic trouble codes (DTCs), component testing, wiring diagrams
Special Procedures:
Turbocharger diagnosis and repair, fuel injection system servicing, electronic component calibration, convertible top operation troubleshooting
Depth:
Expert Level - suitable for professional mechanics and advanced DIYers
Detail Level:
Detailed step-by-step instructions, torque specifications, special tool requirements, exploded views, schematics
Configuration:
3.0L (2979cc) Twin-Turbocharged Inline-6
Bore X Stroke:
84.0 mm x 89.6 mm
Compression Ratio:
10.2:1
Valvetrain:
Double Overhead Camshafts (DOHC), 24 Valves, VANOS (Variable Valve Timing)
Horsepower Est:
300 hp @ 5800 rpm
Torque Est:
300 lb-ft @ 1400-5000 rpm
Fuel Delivery:
High-Pressure Direct Injection (Bosch HPI)
Fuel Type:
Premium Unleaded Gasoline (91+ Octane Recommended)
Turbochargers:
Two Siemens VDO (later BorgWarner) turbochargers with intercoolers
Transmission Type Std:
6-Speed Manual (Getrag GS6-37BZ)
Transmission Type Opt:
6-Speed ZF 6HP19TU (Automatic with Steptronic)
Clutch Type:
Dual-Mass Flywheel
Automatic Features:
Adaptive shift logic, manual shifting mode (Steptronic), sport mode
Manual Transmission Fluid:
BMW MTF LT-2 or equivalent (e.g., Pentosin FFL-3)
Automatic Transmission Fluid:
ZF Lifeguardfluid 6 (LF-6) or equivalent (e.g., Pentosin ATF1)
NHTSA Front Impact Driver:
5-Star (for applicable models)
NHTSA Front Impact Passenger:
5-Star (for applicable models)
IIHS Top Safety Pick:
Yes (for various model years and configurations)
Standard Safety Features:
Dynamic Stability Control (DSC), Anti-lock Braking System (ABS), Cornering Brake Control (CBC), Brake Assist, Traction Control
Optional Safety Features:
Active Head Restraints, Tire Pressure Monitoring System (TPMS)
Airbags:
Front dual-stage airbags, front side-impact airbags, head protection system (curtain airbags for sedans/wagons)
Available Systems:
iDrive infotainment system (CCC or CIC depending on year/options), Professional Navigation, CD Changer, Logic7 Audio System
Connectivity Options:
Bluetooth (hands-free calling, audio streaming), USB/Auxiliary inputs (depending on options)
Available Features:
Adaptive Xenon Headlights, Park Distance Control (PDC), Cruise Control
Advanced Tech:
Complex electronic control units managing engine, transmission, braking, and chassis dynamics.
Oil Change Interval:
Condition Based Service (CBS) system, typically 10,000-15,000 miles or 12-24 months
Spark Plug Replacement:
Approx. 60,000 miles (N54 specific recommendation varies by update)
Brake Fluid Flush:
Every 2 years (regardless of mileage)
Engine Oil Type:
BMW Longlife-01 (LL-01) or BMW Longlife-01 FE (LL-01 FE) compliant synthetic oil, typically 5W-30 or 0W-30
Engine Oil Capacity:
Approx. 6.5 liters (6.9 US quarts)
Coolant Type:
BMW Blue Antifreeze/Coolant (G48 ethylene glycol based)
N54 Common Issues:
High-pressure fuel pump (HPFP) failure, carbon buildup on intake valves, turbocharger wastegate rattle/failure, ignition coil and injector issues, oil cooler gasket leaks.
E90 Chassis Common Issues:
Water pump and thermostat failure, serpentine belt tensioner and pulleys, vacuum line leaks, power steering hose leaks.
Bmw Heritage:
Known for performance, luxury, and engineering excellence since 1916.
3 Series Legacy:
The 3 Series is BMW's best-selling line, representing the core of the brand's sporty driving character and executive appeal.
E90 Generation Introduction:
The E90 generation replaced the E46 and introduced a more modern design language and advanced technology.
Production Period:
2005-2013 (E90 generation)
Manufacturing Locations:
Germany (Dingolfing, Munich), Austria, South Africa, China, India
