You may want to consider a used 4.8 or wait for the diesel to hit the showrooms. The 3.0si will most likely be discontinued next year or during this year. The fuel economy is not much better than the V8 and it is down in power big time. The 3.0 liter biturbo may replace the 3.0si. Good luck.

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2008 BMW X5 4.8i/Space Gray Metallic/Gray Nevada Leather/Dark Burl Walnut Wood Trim/Sport Package/Premium Package/Cold Weather Package/Technology Package/Ipod and USB Adapter/Running Boards/Satellite Radio

Retired: 2004 325i Orient Blue/Sand Leather/Wood Trim/SMG/Premium/Sport/Navigation/Xenon/Premium Sound