4WD, all-wheel drive and 4x4 are all terms that are used interchangeably, but all equate to the same thing. BMW xDrive is powered by an extra layer of intelligence, making it one of the most technically advanced all-wheel drive systems in the segment.
Weather changes and road situations can change in a flash, whatever the season. But with xDrive, BMW's intelligent all-wheel drive system, your car will respond quickly to allow you to enjoy maximum driving pleasure, even on the most difficult road surfaces.