Old thread, I realize, but I do have an old (2006) BF ute!
Referring to the 12th digit in Australian VINs, it seems it does NOT represent the build month.
The VicRoads website checker at
https://www.vicroads.vic.gov.au/regi...18ad7b29f7741b
allows, unlike other states, searches on either Rego or VIN.
Here is the VicRoads checker data for the following Victorian Ford utes currently advertised for sale:
Build Date VIN 12th Digit
03/2005 6FPAAAJGCM5M39993 M
07/2014 6FPAAAJGCMEM67459 M
04/2010 6FPAAAJGCMAT27166 T
11/2012 6FPAAAJGCMCT20560 T
Perhaps the 12th digit is a check letter. If so, does anyone know the algorithm for its determination?