🏷️ Basic Information

Make:

BMW

Model:

3 Series (E90/E91/E92/E93)

Sub Models Covered:

325i, 325xi, 330i, 330xi

Chassis Codes:

E90 (Sedan), E91 (Wagon/Touring), E92 (Coupe), E93 (Convertible)

Production Years Covered:

2006, 2007, 2008, 2009, 2010

Engine Codes:

N51 (Valvetronic), N52

👋 Introduction

Segment:

Compact Executive Sedan/Coupe/Convertible/Wagon

Brand Philosophy:

Ultimate Driving Machine – focus on performance, handling, and driver engagement.

Key Competitors:

Audi A4, Mercedes-Benz C-Class, Lexus IS, Infiniti G35/G37, Cadillac CTS.

Distinguishing Factors:

Rear-wheel drive bias (even on xi models), sophisticated chassis tuning, direct steering feel, premium interior materials, advanced engine technology (Valvetronic).

Platform:

E90/E91/E92/E93, representing a significant evolution in BMW's compact executive platform.

Powertrains:

Inline-6 engines known for smooth power delivery and distinct BMW sound.

Drivetrain Options:

Available in rear-wheel drive (i) and all-wheel drive (xi) configurations.

📋 Manual Details

Manual Type:

Complete Workshop Service Repair Manual

Language:

English

Format:

Downloadable PDF

Page Count:

Extensive, detailed (estimated 3000+ pages based on typical BMW workshop manuals for this era)

Manual Completeness:

Comprehensive, covering all aspects of repair and maintenance

📖 Manual Coverage

Engine:

N51/N52 engine diagnosis, repair, rebuild, component replacement, cooling system, lubrication system, fuel system, ignition system, emissions control.

Transmission:

Automatic and manual transmission service, repair, fluid replacement, clutch service (manual), torque converter service (automatic), electronic control unit (TCU).

Drivetrain:

All-wheel drive (xi models) system diagnosis and repair, differential service, driveshaft and CV joint replacement, axle shaft replacement.

Suspension:

Front and rear suspension component inspection, replacement (control arms, ball joints, bushings, shocks/struts), wheel alignment procedures, steering system service.

Brakes:

Hydraulic brake system diagnosis, repair, pad and rotor replacement, caliper service, brake fluid flush and bleeding, ABS/DSC system troubleshooting and component replacement.

Electrical:

Comprehensive wiring diagrams for all systems, starter, alternator, battery service, lighting system, power windows, power locks, heated seats, headlamp leveling, fuse box layouts, relay functions.

Body:

Body panel alignment, door and trunk operation, interior trim removal and installation, glass replacement, convertible top mechanism (E93), rust prevention and repair.

HVAC:

Air conditioning system diagnosis and repair, refrigerant handling, blower motor, evaporator, condenser, climate control module service, cabin air filter replacement.

Safety Systems:

Airbag system diagnosis, SRS module, seat belt pre-tensioners, parking sensors, tire pressure monitoring system (TPMS).

Diagnostics:

OBD-II troubleshooting, diagnostic trouble codes (DTCs), fault finding strategies, use of BMW diagnostic tools (e.g., ISTA/D).

Routine Maintenance:

Oil and filter changes, air filter replacement, spark plug replacement, cabin air filter replacement, brake fluid flush, coolant flush.

Troubleshooting:

Step-by-step diagnostic procedures for common and uncommon faults across all vehicle systems.

Repair Procedures:

Detailed, illustrated instructions for component removal, installation, and adjustment for virtually every part of the vehicle.

Rebuilding Procedures:

Engine and transmission overhaul procedures with specifications for critical wear tolerances.

Diagnostic Tool Usage:

Guidance on using diagnostic scanners and specific BMW service tools.

Depth:

Expert level, suitable for professional mechanics and advanced DIY enthusiasts. Includes torque specifications, clearances, electrical schematics, and diagnostic flowcharts.

📊 Manual Specifications

File Type:

PDF

Searchability:

Searchable text for quick information retrieval.

Print Quality:

High resolution, suitable for printing individual sections or the entire manual.

Binding For Print:

N/A (Downloadable PDF)

Paper For Print:

N/A (Downloadable PDF)

⚙️ Engine Specifications

Engine Name:

N51 (US market specific, SULEV compliant, Valvetronic)

Engine Name Alternative:

N52 (Standard version)

Engine Type:

Naturally Aspirated Inline 6-Cylinder

Displacement 325:

3.0 Liters (2996 cc)

Displacement 330:

3.0 Liters (2996 cc) - although often marketed with slight variations, the core engine is the same 3.0L N52/N51 block, with tuning and component differences.

Horsepower 325:

Approximately 215-218 hp (varies slightly by year and market)

Torque 325:

Approximately 200-215 lb-ft (varies slightly by year and market)

Horsepower 330:

Approximately 255-260 hp (varies slightly by year and market)

Torque 330:

Approximately 220-230 lb-ft (varies slightly by year and market)

Fuel Delivery:

Electronic Fuel Injection (EFI) with direct injection in some later N51/N52 variants, but typically port injection for this specific model range. Valvetronic variable valve lift system.

Fuel Type:

Premium Unleaded Gasoline (91 octane or higher recommended)

Emission Standard:

N51 engine is SULEV (Super Ultra Low Emission Vehicle) compliant in relevant markets.

🔧 Transmission

Transmission Type Standard:

6-speed Manual Transmission (Getrag GS6-37BZ/DZ)

Transmission Type Optional:

6-speed Automatic Transmission (ZF 6HP19/6HP26 with Steptronic)

Transmission Features:

Steptronic manual shifting mode on automatic transmission, sport mode selection, electronic transmission control unit (TCU).

Automatic Transmission Fluid:

BMW LT-3 (P/N 83 22 0 142 516) or equivalent specialist fluid (e.g., Pentosin ATF1).

Manual Transmission Fluid:

BMW MTF LT-2 (P/N 83 22 0 309 031) or equivalent specialist fluid (e.g., Pentosin MTF 2).

📐 Dimensions

Wheelbase E90:

115.0 inches (2920 mm)

Wheelbase E91:

108.7 inches (2760 mm)

Wheelbase E92 E93:

108.7 inches (2760 mm)

Length E90:

181.2 inches (4603 mm)

Length E91:

180.5 inches (4585 mm)

Length E92:

181.0 inches (4600 mm)

Length E93:

181.1 inches (4601 mm)

Width:

Approx. 70.5-71.5 inches (1791-1816 mm) depending on model

Height:

Approx. 55.5-57.5 inches (1410-1460 mm) depending on model

Curb Weight Range:

Approx. 3500-3800 lbs (1588-1724 kg) depending on configuration

Wheel Bolt Pattern:

5x120

Center Bore:

72.5 mm

Tire Sizes Standard:

225/45R17, 225/40R18 (optional)

Trunk Capacity E90:

Approx. 12 cubic feet (339 liters)

Cargo Capacity E91:

Approx. 15-50 cubic feet (425-1420 liters) with seats folded

🛡️ Safety Features

NHTSA Frontal Impact:

5-Star (for sedans/coupes of this generation)

IIHS Top Safety Pick:

Often awarded Top Safety Pick for models of this generation.

Active Safety:

Dynamic Stability Control (DSC), Dynamic Traction Control (DTC), Anti-lock Braking System (ABS), Cornering Brake Control (CBC), Brake Fade Compensation.

Passive Safety:

Front airbags, side airbags, head protection airbags (curtain airbags), active head restraints, crumple zones, impact-absorbing bumpers.

💡 Technology Features

Infotainment System:

iDrive infotainment system (CCC or CIC depending on production date and options), with features like navigation, radio, CD player, and optional Bluetooth and USB connectivity.

Driver Assistance Features:

Optional: Front and Rear Park Distance Control (PDC), Adaptive Xenon Headlights, Rain-sensing wipers, Cruise Control.

Connectivity Options:

BMW Assist with Bluetooth connectivity, USB audio interface (optional).

🔧 Maintenance

Oil Change Interval:

Typically every 10,000-15,000 miles or 12-24 months, depending on driving conditions and BMW's Condition Based Service (CBS) system. Manual will detail specific procedures and recommendations.

Brake Fluid Interval:

Every 2 years, regardless of mileage.

Coolant Interval:

BMW Long-Life Coolant (BMW blue) typically has a very long initial interval, often 50,000-100,000 miles, but replacement is recommended by the manual. Manual provides specific guidance.

Spark Plug Interval:

Typically around 60,000-100,000 miles for iridium spark plugs, depending on the specific plug and engine variant. Manual will specify exact intervals and part numbers.

Engine Oil Specification:

BMW Long-Life 01 (LL-01) or Long-Life 04 (LL-04) depending on market and engine variant. Viscosity typically 0W-30 or 5W-30. Manual will list precise OEM specifications and part numbers.

Engine Oil Capacity:

Approx. 6.5 quarts (6.2 liters) for N52/N51 engines. Manual confirms exact capacity.

Coolant Specification:

BMW Blue Antifreeze/Coolant (P/N 82 14 1 467 704)

Power Steering Fluid:

Hydraulic fluid (ATF Dexron VI or similar specified by BMW). Manual will detail exact requirement.

Common Issues Engine:

Valve cover gasket leaks (common on many BMWs of this era), oil pan gasket leaks, water pump failures (electric water pumps are common failure points), eccentric shaft sensor failures, DISA valve issues (intake manifold flap), ignition coil and spark plug issues.

Common Issues Cooling System:

Plastic expansion tank cracks, coolant leaks from various hoses, electric water pump failure leading to overheating. The manual provides detailed diagnosis for these.

Common Issues Suspension:

Worn control arm bushings, worn ball joints, strut mount failures. Manual provides replacement procedures and torque specs.

Common Issues Electrical:

Window regulator failures, HVAC blower motor resistor failure, iDrive system glitches, various sensor failures due to aging wiring or components. Manual's electrical schematics are crucial here.

Oil Filter Housing Gasket:

Oil leaks from the oil filter housing gasket are a common maintenance item. Manual details removal and replacement.

📚 Vehicle History

Bmw Legacy:

BMW AG, a German company with a long history of producing high-performance luxury vehicles and motorcycles, renowned for engineering and driving dynamics.

E90 Generation Introduction:

The E90 generation replaced the E46 3 Series, introducing significant updates in styling, technology, and chassis design.

E90 Platform Significance:

Introduced innovations like electric power steering (EPS) in later models, advanced suspension designs, and more sophisticated electronic integration.

Production Locations:

Primarily produced in Germany (e.g., Munich, Dingolfing) and also at BMW's Spartanburg plant in South Carolina, USA.

Mid Cycle Refresh:

Received a significant facelift (LCI) around 2009, with updated styling for front and rear ends, and technological improvements.

🏆 Awards & Recognition

Ward S 10Best Engines:

The BMW N52 engine (upon which these variants are based) was a multi-time recipient of Ward's 10 Best Engines award for its refinement, power delivery, and efficiency.

Car And Driver 10Best:

Various 3 Series models of this generation frequently appeared on Car and Driver's 10Best lists during their production run.

Emission Certifications:

N51 engine achieved SULEV (Super Ultra Low Emission Vehicle) status in certain markets, meeting stringent environmental standards.