Chrysler Australia do not have their vehicles tested in Australia and none have a ANCAP rating. Any ANCAP ratings published are false and incorrect as no Chrysler Jeep Or Dodge vehicles are crash tested in Australia or Europe.
They are crash tested in the USA hence they have the US Rating.
http://www.nhtsa.gov/
http://www.safercar.gov/Vehicle+Shop...?vehicleId=512
The New US 2011 Crash Test procedure has been made more rigorous and difficult to acheive a 5 star rating. If the 2011 Grand Cherokee was tested under the 2010 procedure it would have had a 5 Star rating. The 2010 WH has a 5 Star under the older rating system and the 2011 WK2 has a 4 Star rating under the new tougher testing even though the new model is loaded with more safety features and is noticably safer with more air bags etc.