2008 BMW 125i Service and Repair Manual

This factory service and repair manual for the 2008 BMW 125i is narrow on paper: a single naturally aspirated 3.0L DOHC inline-six of 183 cubic inches, a single two-door coupe body, and one trim listed simply as Coupe. That narrowness works in a technician's favor, because every torque value, clearance and diagnostic routine printed for the engine applies to the car in front of you without cross-checking against another displacement, and the wiring diagrams describe one shell carrying one level of equipment.

Engines covered

• 3.0L inline-six (183 cu in) — DOHC, naturally aspirated, gasoline

Body styles covered

• 2-door coupe

Trims covered

• Coupe

Known issues on the 2008 125i. Work on this car concentrates on the inline-six and what hangs off it — the cooling system, the crankcase ventilation, the fuel supply and the ignition — all of which the manual treats with their own specifications, torque figures and test procedures. Beyond the engine bay the sections run through manual and automatic transmission work, the rear axle and driveshafts, suspension and steering geometry, brake hydraulics and stability control, the restraint system and the body electrical, with wiring diagrams and fault-code diagnostics for each of them.