BMW 428i Gran Coupe sputtering and stalling with recurring drivetrain malfunction light on BMW 428i Gran Coupe

Some BMW 428i Gran Coupe owners report experiencing sputtering and stalling issues, accompanied by a recurring drivetrain malfunction light, which may indicate potential problems with the transmission, differential, or propshaft. This warning light typically signifies an issue with an engine or transmission component, and the drivetrain malfunction message can lead to the vehicle entering fail-safe driving mode. Owners have noted that sputtering and stalling could be linked to problems in the ignition, fuel system, or transmission. It is advisable for owners to conduct a thorough diagnostic check to pinpoint the exact cause of these performance issues. While some may attempt to reset the drivetrain malfunction warning themselves, if the problem persists, it is recommended to have the vehicle inspected by a qualified mechanic to address the underlying issues.