2015 BMW i8 Service and Repair Manual

This factory service and repair manual for the 2015 BMW i8 documents a two-door coupe, Base trim, powered by a 1.5L inline-three plug-in hybrid — turbocharged, double overhead cam, gasoline. Two power sources in one car mean two sets of readings that have to agree: the engine's fuel, ignition and boost values on one side, the hybrid system's own measurements on the other. The manual separates them into their own sections while keeping the shared items — cooling, driveline, chassis — where either line of work can reach them.

Engines covered

• 1.5L inline-three plug-in hybrid — DOHC, turbocharged, gasoline

Body styles covered

• 2-door coupe

Trims covered

• Base

Known issues on the 2015 i8. One recall sits on this year's federal record. Holes drilled out of specification inside the stability control hydraulic unit can restrict its pistons, degrading the system's functions and reaching braking itself. Five owner complaints have been recorded, split between the electrical system and the engine at two each, with one more on stability control. Hydraulic brake service, bleeding procedures and the diagnostics for the stability and antilock systems are covered here, alongside the engine and body electrical material and the wiring diagrams behind it.