Active Cruise Control with Stop & Go function, ACC

See also:

On-demand control of ancillary units saves energy
Intelligent energy management in the new BMW 3-Series is further enhanced by the ancillary units, which consume significantly less energy compared with conventional systems. Examples include the o ...

Switching on automatically
Select transmission position R with the engine running. ...

Tachometer
Always avoid engine speeds in the red warning field. In this range, the fuel supply is interrupted to protect the engine. ...