It is built in Austria. Check out the VIN decoding information on the web.

Also, are you referring to the W being the first digit (manufacturing country) or the 11th digit (plant code)? Just asking because the first W means Germany for manufacturing country, and I don't have the plant code handy for the Magna Steyr contract plant in Graf Austria.

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2007 X3 3.0si, 6 MT, Premium, White

Retired:
2008 535i, 6 MT, M Sport, Premium, Space Grey
2003 X5 3.0 Steptronic, Premium, Titanium Silver
2002 325xi 5 MT, Steel Grey
2004 Z4 3.0 Premium, Sport, SMG, Maldives Blue