2018 BMW 230i Service and Repair Manual

This factory service and repair manual for the 2018 BMW 230i works from a short specification — one engine, one trim, two bodies. The engine is the turbocharged 2.0L DOHC inline-four of 122 cubic inches; the trim is Base; the bodies are a two-door convertible and a two-door coupe. Because the mechanical package does not change between them, the specifications, torque values and diagnostic trees carry across, and the divergence shows up only where the roof does.

Engines covered

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

Body styles covered

• 2-door convertible
• 2-door coupe

Trims covered

• Base

Known issues on the 2018 230i. The system-by-system layout means the four-cylinder's procedures — timing, valve clearances, charge-air and cooling service, fuel and ignition specifications — sit apart from the driveline sections, which cover the transmission and rear axle in their own right. Chassis chapters give alignment figures, spring and damper detail and brake specifications, while the wiring diagrams and fault-finding charts run through the lighting, restraint, comfort and body control circuits of both the coupe and the convertible.