Theres really no rule of thumb for this stuff guys. It varies from manufacturer to manufacturer, even model to model. It matters less when the car was produced and more what revisions were made to the car. If revisions for the 12 model start in January of 11, then 1/11 production cars may be sold as 2012 models. Therse no definitive formula or anything to determine this. With OUR specific cars it appears to be after September was next year's production. This is how most cars were until somewhat recently, now cars be produced almost any time and be as next year's. They just sit and accumulate dirt after they are made for a few months before getting shipped out as the "new" models after already sitting for months.