BMW 5 Series: Close the windows and glass 
sunroof - Saving fuel - Driving tips - BMW 5 Series Owners ManualsBMW 5 Series: Close the windows and glass sunroof

Driving with the glass sunroof and windows open results in increased air resistance and raises fuel consumption.

    Remove attached parts following 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. ...

    Check the tire inflation pressure regularly
    Check and, if necessary, correct the tire inflation pressure at least twice a month and before starting on a long trip. Low tire inflation pressure increases rolling resistance and thus raises ...

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    Media center 730n/430 (rer/ren/rbz) — am/fm stereo radio and cd/dvd/hdd/nav — if equipped
    NOTE: The sales code is located on the lower right sideof the unit’s faceplate. The REN, RER and RBZ radios contain a CD/DVDplayer, USB port, and a 30-gigabyte hard drive (HDD). Sirius Satellite ...

    Be Reasonable With Requests
    If you list a number of items and you must have your vehicle by the end of the day, discuss the situation with the service advisor and list the items in order of priority. At many authorized deal ...

    Event Data Recorder (EDR)
    This vehicle is equipped with an event data recorder (EDR). The main purpose of an EDR is to record, in certain crash or near crash-like situations, such as an air bag deployment or hitting a ro ...