it's similar, but the X5 is more designed for light off-roading...like going over gravel, the air suspension in the Land Rovers are designed for heavy off-roading and have a bit more travel / articulation as well as selectable off-road programs for the traction control and the diffs

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2006 BMW X5 4.8is Lemans Blue/Beige/Dark Maple
-Nav, Comfort Seats, Heated Steering Wheel,
Rear Airbags, AUX Input
2009 BMW M3 Space Grey/Black/Carbon
-all options