Remove attached partsfollowing use

Remove auxiliary mirrors, roof or rear luggage racks which are no longer required following use.

Attached parts on the vehicle impair the aerodynamics and increase the fuel consumption.

    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 ...

    Dynamic, efficient and innovative: the new BMW 3 ActiveHybrid
    In autumn 2012 a further model will join the BMW 3-Series. In the new 3 ActiveHybrid - a full hybrid at the premium end of the sports sedan class - the innovative BMW ActiveHybrid powertrain techn ...

    Safety
    Both the coupe and convertible have front airbags plus side-impact airbags built into the front seats. As required of all 2012 models sold in the U.S., the 640i has standard antilock brakes and an ...