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:

    Instrument lighting
    Adjusting The parking lamps or low beams must be switched on to adjust the brightness. Adjust the brightness using the thumbwheel. ...

    Lamps
    At a glance 1 Rear fog lamps* 2 Front fog lamps* 3 Automatic headlamp control / adaptive light control* / high-beam assistant* / welcome lamps / daytime running lights* 4 Lamps off / daytime ...

    Vehicle equipment
    All standard, country-specific and optional equipment that is offered in the model series is described in this chapter. Therefore, equipment is also described that is not available in a vehicle, ...