This is also what makes their X drive system unique. Most all wheel drive systems are predominantly front wheel drive and add power to the rear wheels in times of need. BMW is predominantly rear wheel drive and adds power to front wheels in times of need. So you can still get that rear wheel drive experience but have the added safety if the conditions warrant four wheel drive.
Edit: The little Jeeps ( Compass and Cherokee and Renegade) are front wheel drive, when they aren't in all wheel.
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