Under the Hood

Both engines incorporate direct fuel injection and turbocharging. The xDrive35i uses a new 3.0-liter inline-six-cylinder with one turbocharger, while the xDrive50i uses a 4.4-liter V-8 with two. Power ratings are unchanged on the new six-cylinder, but BMW says it is more efficient. BMW says both engines promise minimal turbo lag and a flat torque curve that begins under 2,000 rpm.

300-horsepower, 3.0-liter six-cylinder with 300 pounds-feet of torque (xDrive35i)
400-hp, 4.4-liter eight-cylinder with 450 pounds-feet of torque (xDrive50i)
New eight-speed automatic transmission
xDrive's Dynamic Performance Control doles out power from front to rear and side to side, at least among the rear wheels
Differential electronically varies power proactively from a full 50/50 lock to as much as 100 percent going to either wheel to enhance performance and safety
Adaptive Drive system electronically alters suspension's stiffness between sport- and comfort-oriented settings to suit different driving conditions

    See also:

    Service and WarrantyInformation Booklet for USmodels and Warranty andService Guide Booklet forCanadian models
    Please consult your Service and Warranty Information Booklet for US models and Warranty and Service Guide Booklet for Canadian models for additional information on service requirements. Maintena ...

    Children should always be in the rear
    Accident research shows that the safest place for children is in the back seat. Transporting children in the rear Only transport children younger than 13 years of age or shorter than 5 ft/1 ...

    Having possible commands read aloud
    You can have the available commands read out loud for you: ›Voice commands‹ For example, if the "Settings" menu is displayed, the commands for the settings are read out loud. ...