I googled and found this Drive (SMH) article on the states of origin of vehicles sold in Australia. It is from May 2005, and although it may be out of date, it is useful, particularly the bit about the VIN codes...
http://www.drive.com.au/Editorial/Ar...3&vf=1&IsPgd=0
Some extracts:
Where do I come from?
City and country of origin
BMW 1 Series, 3 Series coupe, convertible, station wagon, Munich, Germany; 3 Series sedan, Pretoria, South Africa; 5 Series, 6 Series and 7 Series, Dingolfing, Germany; X3, Graz, Austria; X5 and Z4, Spartanburg, US.
Crack the code
Need your vehicle's state of origin?
The first two digits of your vehicle's 17-character Vehicle Identification Number code may be the only clue where it was assembled. Here are the VIN codes for vehicles on sale in Australia.
VA through VE - Austria
SN through ST - Germany
WA through WO - Germany
AA through AH - South Africa
1A through 1O - United States
4A through 4O - United States
5A through 5O - United States
.....
Details correct at publication.