2023 BMW M850i xDrive Service and Repair Manual

This factory service and repair manual for the 2023 BMW M850i xDrive documents a turbocharged 4.4L V8 with double overhead cams, gasoline fueled, in two two-door bodies — a convertible and a coupe — across trims listed as Base and Coupe. The engine specification does not change between them, so the powertrain, fuel, ignition and cooling sections are written once. What changes is above the beltline, and the manual handles that in its body and roof sections.

Engines covered

• 4.4L V8 — DOHC, turbocharged, gasoline

Body styles covered

• 2-door convertible
• 2-door coupe

Trims covered

• Base
• Coupe

Known issues on the 2023 M850i xDrive. The book is a maintenance and repair reference. It sets out engine procedures and torque values for the V8, fuel, ignition and cooling specifications, transmission and driveline work, and brake, suspension and steering figures. The convertible's roof components and both bodies' lighting, climate and restraint circuits are drawn as wiring diagrams, with diagnostic routines that state the readings a healthy circuit should return.