2023 BMW M4 Service and Repair Manual

This factory service and repair manual for the 2023 BMW M4 has five trims to account for: Base, Competition, Competition Heritage, Competition xDrive and CSL, spread across a two-door coupe and a two-door convertible. One engine serves all five, a turbocharged 3.0-liter inline-six with double overhead camshafts on gasoline, which keeps the engine material single-threaded while the chassis, driveline and body sections carry the figures that separate one car from the next.

Engines covered

• 3.0L inline-six — DOHC, turbocharged, gasoline

Body styles covered

• 2-door coupe
• 2-door convertible

Trims covered

• Base
• Competition
• Competition Heritage
• Competition xDrive
• CSL

Known issues on the 2023 M4. Coverage follows the car system by system. The inline-six is documented from the timing drive and cylinder head through the charging and cooling circuits, with torque sequences given in the order they are meant to be worked. Driveline material covers the transmission, driveshaft and final drive; the chassis sections give suspension and brake specifications together with the alignment figures used to check them; and the wiring diagrams run from the power distribution points out to lighting, restraint and comfort circuits for fault tracing.