2018 BMW 330e Service and Repair Manual

This factory service and repair manual for the 2018 BMW 330e has three trims to account for — Base, iPerformance and iPerformance Sport Line — on one four-door sedan body with one drivetrain, the turbocharged 2.0L DOHC inline-four of 122 cubic inches in plug-in hybrid form. The trims change equipment rather than mechanicals, so the engine, hybrid, transmission and chassis procedures apply across all three, and the wiring diagrams show where the added equipment ties in.

Engines covered

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

Body styles covered

• 4-door sedan

Trims covered

• Base
• iPerformance
• iPerformance Sport Line

Known issues on the 2018 330e. The structure follows the car's two power sources. Engine chapters cover the turbocharged four-cylinder in the usual detail — timing, valve gear, charge-air, fuel, ignition and cooling, each with torque values and clearances. Hybrid coverage adds the high-voltage system's service and diagnostic steps. The rest is conventional sedan work: transmission and driveline specifications, steering and suspension geometry, brake data, and the circuit diagrams and fault charts for the body and safety systems.