There's a huge difference in quality between 2011 vs. 2010 (Dodge/Chrysler) products. So how do you tell a 2011 from a 2010 model easily and quickly?

Best way to differentiate IMO:

For 2011 Dodge (Chargers/Journeys/Avengers/Grand Caravans/Durangos): Check the lower right quadrant of the Dodge 4-quadrant grille; there will be chrome lettering that says either "Charger" or "Dodge". This is lettering is not present on the 2010 models.

For some reason, the 2011 Dodge Caliber lacks this lettering, but you can tell from the new front and rear headlights. Also, the 2011 base models come with a USB port standard.

For 2011 Chrysler (200/300/Town & Country): Check the front grille, it's redesigned such that there are only horizontal chrome beams, no vertical beams/cross-hatched design here. It's a little hard to describe. Additionally, both the 200 and 300 have new white LED front headlamp highlights, like on the Audis.