I found the info Cardaft was talking about regarding VIN numbers, so here it is:
You can also visit the site below, which can decode up to the full VIN. The amount it can decode depends on the age of your car.
VW VIN Decoder
lunalupi said:The 11th digit of your VIN code is the factory, decode using the list below:
A Ingolstadt, Germany
B Brussels, Belgium
D Bratislave, Slovakia
E Emden, Germany
G Gratz, Germany
H Hannover, Germany
K Osnabrueck, Germany
M Mexico
N Neckarsulm, Germany; Mlada Boleslav
P Mosel
R Martorell, Spain
S Stuttgart, Germany
T Kvasiny
V Palmela, Portugal
W Wolfsburg, Germany
X Posnan
Y Pamplona, Spain
You can also visit the site below, which can decode up to the full VIN. The amount it can decode depends on the age of your car.
VW VIN Decoder