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:
Treadwear
The treadwear grade is a comparative rating
based on the wear rate of the tire when tested
under controlled conditions on a specified government test course. For example,
a tire graded
150 wou ...
Use high-quality brands
Field experience has indicated significant differences
in fuel quality: volatility, composition, additives,
etc., among gasolines offered for sale in
the United States and Canada. Fuels containi ...
Low beams
Switch position with the
ignition switched
on: the low beams light up. ...
