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 on-demand coolant pump, the electronically controlled oil pump and the electromechanical steering system, which only consumes electric power when steering assistance is actually required. The special air conditioning compressor featured on many of the sports sedan models works on the same principle. As soon as the driver switches the air conditioning off, the belt drive to the compressor is disconnected by a magnetic clutch, to minimise power drain.

    See also:

    Displays in the instrument cluster
    1 Display of desired speed 2 Indicator lamp 3 Brief status display Desired speed Display in the speedometer: The marking lights up in green: the system is active. The marking lights u ...

    Crunching the Numbers
    Prices for the X5 start at $47,500 for the xDrive30i; the diesel costs $51,200 and the lineup peaks at the $56,200 xDrive48i. Standard features include faux leather upholstery, power front seats, ...

    Low beams
    Switch position with the ignition switched on: the low beams light up. ...