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:
General information
Instructions for voice activation system, refer to
page 22.
To have the available spoken instructions read
out loud: ›Voice commands‹ ...
Reference
This chapter contains technical data, short commands for the voice activation
system and an index that will help you find information most quickly. ...
Opening the main menu
Press the button.
The main menu is displayed.
All iDrive functions can be called up via the main
menu. ...