IIHS Criteria

The Insurance Institute for Highway Safety rates a vehicle for how well it protects its occupants from front and side impacts, rollovers and rear impacts. In addition, the vehicles must offer electronic stability control.
There are 4 possible ratings for each vehicle-G (and GREEN CODED) or GOOD is the Highest rating that may be achieved according to IIHS. The 2011 Toyota Sienna IS in the green!