2018 BMW 120i Service and Repair Manual

This factory service and repair manual for the 2018 BMW 120i narrows to two trims, M Sport and Sport Line, both offered as two-door or four-door hatchbacks. The engine is the turbocharged 2.0L inline-four of 122 cubic inches, DOHC and gasoline-fed. A short model range makes the book easier to navigate: there is one set of engine specifications, one driveline layout, and only two equipment levels whose wiring and interior fittings have to be told apart in the body sections.

Engines covered

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

Body styles covered

• 2-door hatchback
• 4-door hatchback

Trims covered

• M Sport
• Sport Line

Known issues on the 2018 120i. The manual's coverage runs the length of the car: engine mechanical, fuel injection, boost and cooling procedures for the turbocharged 2.0L four; clutch, gearbox and final drive; brakes, steering and suspension with alignment and torque data; and the body electrical system, drawn as wiring diagrams and supported by diagnostic routines for the control modules on board.