Guidance on using BMW-specific diagnostic tools (e.g., ISTA/D, INPA) and generic OBD-II scanners.
Repair Complexity:
Covers a wide range of repairs from basic maintenance to complex engine and transmission overhauls, suitable for DIY enthusiasts and professional mechanics.
Specifications And Tolerances:
Provides precise torque specifications, clearances, and tolerances for all mechanical components.
๐ Manual Specifications
File Format
File Type:
PDF
Searchability:
Text-searchable for quick access to specific information.
Print Quality:
High-resolution, printable pages for workshop use.
Accessibility:
Downloadable for offline access on multiple devices.
โ๏ธ Engine Specifications
Primary Engine
Engine Codes Overview:
N45B16 (116i), N47D20 (116d, 118d, 120d), N43B16/N43B20 (118i, 120i), M54B30 (older 130i variants, potentially N52B30 for later models in range), N54B30 (123d).
Performance
116I Power Hp:
Approx. 115-122 hp
116D Power Hp:
Approx. 110-115 hp
118I Power Hp:
Approx. 143 hp
118D Power Hp:
Approx. 143 hp
120I Power Hp:
Approx. 170 hp
120D Power Hp:
Approx. 177 hp
123D Power Hp:
Approx. 204 hp (TwinPower Turbo Diesel)
130I Power Hp:
Approx. 255-265 hp (Naturally Aspirated Inline-6)
Fuel System
Petrol Injection Type:
Direct Injection (N43) or Multi-point Injection (N45/N46)
Diesel Injection Type:
Common Rail Direct Injection (CRDI)
๐ง Transmission
Standard
Manual Transmission:
6-speed manual transmission (Getrag or ZF variants).
Dynamic Stability Control (DSC) including ABS, DTC, CBC (Cornering Brake Control).
Braking Assist:
Brake Assist system.
Passive Features
Airbags:
Front airbags, side airbags, head airbags (curtain airbags).
Seatbelts:
3-point inertia-reel seat belts with pre-tensioners and force limiters.
๐ก Technology Features
Infotainment
Idrive System:
BMW's iDrive infotainment system, controlled via a central rotary knob and buttons, offering navigation, media, climate control, and vehicle settings.
Driver Assistance
Parking Aids:
Park Distance Control (PDC) front and rear sensors.
Cruise Control:
Standard cruise control, with optional Active Cruise Control (ACC) on some models.
Connectivity
Bluetooth:
Bluetooth interface for hands-free calling and audio streaming.
๐ง Maintenance
Service Intervals
Oil Change Interval:
Variable Service Interval (VSI) based on driving conditions, typically around 15,000-25,000 km or 1-2 years, indicated by the Condition Based Service (CBS) system.
Brake Fluid Change:
Every 2 years, regardless of mileage.
Coolant Change:
Initial fill for life, or replacement typically around 4-5 years, depending on manufacturer recommendation and coolant type.
Fluid Specifications
Engine Oil Spec:
BMW Longlife-01 (LL-01) or Longlife-04 (LL-04) for diesel, depending on engine and region. Viscosity typically 0W-30 or 5W-30.
Transmission Fluid Manual:
GL-4 or GL-5 rated manual transmission fluid, specific viscosity often specified (e.g., 75W-80 or 75W-90).
Transmission Fluid Automatic:
ZF LifeguardFluid 6 (for 6HP19 transmissions).
Brake Fluid Spec:
DOT 4.
Coolant Spec:
BMW Blue Antifreeze (G48 ethylene glycol based).
Known Issues
N47 Diesel Timing Chain:
Early N47 diesel engines were prone to timing chain wear and failure. The manual will detail inspection and replacement procedures.
E87 Water Pump Failure:
Reports of electric water pump failures on certain models, leading to overheating. Manual covers diagnosis and replacement.
Injector Issues Petrol:
Direct injection petrol engines (N43) can experience injector issues, carbon buildup. Manual details cleaning and replacement.
Dpf Issues Diesel:
Diesel Particulate Filter (DPF) clogging can occur with predominantly short-journey driving. Manual provides regeneration procedures and troubleshooting.
๐ Vehicle History
Brand Heritage
Bmw Heritage:
BMW AG, a German multinational company, renowned for luxury and performance vehicles since its founding in 1916.
Model Evolution
First Generation:
The 1 Series (E81/E87) was BMW's first foray into the compact premium segment, launched in 2004.
Facelift:
A significant facelift occurred in 2007, introducing updated styling, engines (e.g., N43 petrols), and improved interior features.
Production
Manufacturing Locations:
Primarily produced at BMW's Leipzig plant in Germany.
๐ Awards & Recognition
Recognitions
Ward Powertrain Excellence:
BMW's engines, particularly their inline-6 and efficient 4-cylinder units, have historically received 'Ward's 10 Best Engines' awards, reflecting their engineering prowess relevant to the 1 Series powertrain options.
European Car Of The Year:
While the 1 Series itself may not have won the overall award, its introduction represented a significant product development for BMW in a key segment.