🏷️ Basic Information

Make:

BMW

Model:

1 Series

First Generation Codes:

E81 (3-door hatchback), E82 (coupe), E87 (5-door hatchback)

Covered Chassis Codes:

E81, E82, E87

Covered Engine Codes:

N43B16 (116i), N43B20 (118i, 120i), N47D20 (118d, 120d), M54B30 (130i), N54B30 (135i, 135is), N57D30 (123d)

👋 Introduction

Segment:

Compact premium hatchback and coupe

Key Competitors:

Volkswagen Golf, Audi A3, Mercedes-Benz A-Class (depending on market and specific model year comparisons within the broader range)

Engineering Philosophy:

Rear-wheel drive platform (primarily for early models), balanced chassis, premium interior appointments, sporty driving dynamics.

Manual Advantage:

Provides dealer-level diagnostic and repair information, enabling independent mechanics and DIY enthusiasts to perform complex tasks accurately.

📋 Manual Details

Covered Years:

1982-2007

Covered Models And Trims:

1 Series E81 (118d, 118i, 120d, 120i, 130i), E82 (120d, 123d, 135is), E87 (116i, 118d, 118i, 120d, 120i, 130i)

Estimated Page Count:

Extensive (typically 2000+ pages for comprehensive factory service manuals)

Type:

Factory Service and Repair Manual

Language:

English

Format:

Digital (likely PDF or proprietary software)

📖 Manual Coverage

Engine Mechanical:

Engine assembly, cylinder head, block, crankshaft, pistons, connecting rods, timing system, lubrication system, cooling system, intake and exhaust manifolds

Engine Management:

Fuel injection, ignition system, emissions control, engine control unit (ECU) diagnostics and programming

Transmission:

Manual transmission (Getrag, ZF), Automatic transmission (Steptronic), clutch system, drivetrain components (driveshafts, differentials)

Brakes:

Hydraulic system, ABS, DSC, brake calipers, rotors, pads, parking brake, brake fluid specifications

Suspension And Steering:

Front and rear suspension components (struts, shocks, control arms, bushings), steering system (rack and pinion, power steering fluid)

Electrical System:

Battery, alternator, starter, wiring diagrams, fuses, relays, lighting systems, body control module (BCM)

Body And Interior:

Body panels, doors, windows, locks, seating, climate control system, airbags

Diagnostic Troubleshooting:

Fault codes, symptom-based diagnostics, component testing procedures

Routine Maintenance:

Oil changes, filter replacements, fluid checks and top-offs, spark plug replacement, belt inspection and replacement

Repair And Rebuild:

Engine overhaul, transmission repair, brake system service, suspension component replacement, electrical component repair

Diagnostics:

Step-by-step troubleshooting guides for common and complex issues

Technical Service Bulletins:

Inclusion of official manufacturer bulletins addressing known issues and solutions

Depth Of Information:

Comprehensive: Covers everything from basic maintenance to complete engine and transmission rebuilds, including detailed diagnostic procedures and component specifications.

📊 Manual Specifications

Digital Format Details:

Likely a high-resolution PDF with searchable text, allowing for quick access to specific information. May also be available as proprietary software.

Image Quality:

High-quality, clear illustrations and diagrams essential for accurate repair procedures.

Binding Type:

N/A (Digital Format)

Paper Quality:

N/A (Digital Format)

⚙️ Engine Specifications

116I (E87):

1.6L Inline-4, ~115 hp, Port Injection

118I (E87/E81):

2.0L Inline-4, ~143 hp, Direct Injection (N43)

120I (E87/E81):

2.0L Inline-4, ~170 hp, Direct Injection (N43)

130I (E87/E81):

3.0L Inline-6, ~265 hp, Direct Injection (N52)

118D (E87/E81):

2.0L Inline-4 Turbo Diesel, ~143 hp, Common Rail Direct Injection (N47)

120D (E87/E81):

2.0L Inline-4 Turbo Diesel, ~177 hp, Common Rail Direct Injection (N47)

123D (E82):

2.0L Inline-4 Twin-Turbo Diesel, ~204 hp, Common Rail Direct Injection (N47)

135I/135Is (E82):

3.0L Inline-6 Twin-Turbo, ~300-320 hp, Direct Injection (N54/N55)

Torque Curves:

Manual covers detailed torque figures and characteristic curves for each engine variant.

Fuel Delivery:

High-pressure direct injection for gasoline engines, common rail direct injection for diesel engines.

🔧 Transmission

Standard Transmission:

Manual gearbox (e.g., 6-speed Getrag GS6-37BZ for many models)

Optional Transmission:

Automatic transmission (e.g., 6-speed Steptronic GA6HP19Z)

Clutch Specifications:

Includes details on clutch assembly, hydraulic actuation, and release bearing.

Transmission Fluid:

Specific BMW approved transmission fluid types and capacities for both manual and automatic transmissions.

📐 Dimensions

Wheelbase:

Approximately 2660 mm (E87), 2660 mm (E81), 2660 mm (E82)

Overall Length:

Varies by body style: E87 (approx. 4239 mm), E81 (approx. 4319 mm), E82 (approx. 4472 mm)

Curb Weight:

Varies significantly by engine and drivetrain, generally ranging from 1350 kg to 1600 kg.

🛡️ Safety Features

Euro Ncap Results:

Typically achieved high safety ratings, often 5-star for adult occupant protection in Euro NCAP testing for models within this generation.

Dynamic Stability Control:

DSC (Dynamic Stability Control) is a standard or optional feature covered in detail for troubleshooting and calibration.

Anti Lock Braking System:

ABS (Anti-lock Braking System) operation and diagnostics.

Airbag Systems:

Comprehensive coverage of front, side, and curtain airbags, including deployment sensors and control modules.

💡 Technology Features

I Drive System:

Coverage for the iDrive infotainment system, including navigation, radio, and climate control integration (depending on vehicle specification).

Parking Sensors:

Installation, troubleshooting, and calibration of front and rear parking assistance systems (PDC).

Bluetooth Preparation:

Details on the integration and troubleshooting of Bluetooth phone connectivity and audio streaming.

🔧 Maintenance

Oil Change Interval:

Typically every 15,000 miles or 12 months, as indicated by the vehicle's Condition Based Service (CBS) system. Manual provides guidance on resetting CBS indicators.

Brake Fluid Flush:

Every 2 years, regardless of mileage.

Spark Plug Replacement:

Varies by engine: Long-life iridium plugs for gasoline engines, often around 60,000-100,000 miles. Manual specifies exact intervals and part numbers.

Engine Oil:

BMW Longlife-01 (LL-01) or Longlife-04 (LL-04) for diesel, depending on engine. Specific viscosity grades (e.g., 5W-30, 5W-40) detailed in manual.

Coolant:

BMW Blue (G48) or Green (original spec) antifreeze, mixed with distilled water. Capacity specified per model.

Power Steering Fluid:

BMW PSF-4 (Pentosin CHF 11S) or equivalent.

N47 Timing Chain:

Potential for premature wear or failure of the timing chain on some N47 diesel engines. Manual provides diagnostic and replacement procedures.

N54 Twin Turbo:

Common issues include fuel injector problems, high-pressure fuel pump (HPFP) failures, and wastegate rattle. Manual details diagnostic tests for these.

E87 Water Pump:

Premature failure of electric water pumps on some models can lead to cooling system issues. Manual outlines testing and replacement.

📚 Vehicle History

Bmw Legacy:

BMW's reputation for 'Ultimate Driving Machine' and sporty handling is a key aspect of the 1 Series.

Introduction Of 1 Series:

The 1 Series was introduced in 2004 as BMW's entry into the premium compact segment, aimed at younger buyers and as a smaller alternative to the 3 Series.

First Generation Development:

Built on a rear-wheel-drive platform, a departure from many competitors who used front-wheel drive. This offered a distinct driving advantage. The E87 (5-door) was the initial launch, followed by the E81 (3-door) and E82 (coupe/convertible).

Manufacturing Locations:

Primarily manufactured in Germany (e.g., Leipzig plant).

🏆 Awards & Recognition

Ward 10 Best Engines:

Several BMW engines used in the 1 Series (especially the inline-6 variants) received 'Ward's 10 Best Engines' awards during this period for their performance and refinement.