2005 BMW 120i Service and Repair Manual

This factory service and repair manual for the 2005 BMW 120i sets a single engine against two body shells: a naturally aspirated 2.0L inline-four of 122 cubic inches, twin-cam and running on gasoline, in either a two-door or a four-door hatchback. Five trims are documented — Base, Business, Dynamic, Sport and Style — and what separates them is equipment rather than mechanical specification, so the engine and driveline chapters apply across the whole range while the body, trim and interior sections divide by shell.

Engines covered

• 2.0L inline-four (122 cu in) — DOHC, naturally aspirated, gasoline

Body styles covered

• 2-door hatchback
• 4-door hatchback

Trims covered

• Base
• Business
• Dynamic
• Sport
• Style

Known issues on the 2005 120i. With one engine to serve, the manual can be specific rather than general. Procedures, specifications, torque values, wiring diagrams and diagnostics are given for the naturally aspirated 2.0L four, its fuel and ignition systems, its cooling and emission control equipment, and the transmission and driveline behind it. Brakes, steering and suspension are documented to the same depth, and the body electrical sections cover both hatchback shells and the equipment differences that separate the five trims.