Some people in Oz get confused with Land Rover Model Year (which is something like September to August) and the manufacture date affixed by Land Rover Australia on the compliance plate.
On a MY13 vehicle built in October 2012 at Solihull arrives in Australia in December and gets a MY12 compliance date.
For registration and insurance it's a 2012 model and for Land Rover parts its a 2013 vehicle.

