The 2012 Grand Cherokee received and overall 5-star rating in the Initial Quality Study (IQS) in the "Midsize Crossover SUV" category.
http://autos.jdpower.com/ratings/index.htm
http://autos.jdpower.com/research/Jeep/Grand+Cherokee/2012/SUV/ratings.htm
http://autos.jdpower.com/ratings/index.htm
http://autos.jdpower.com/research/Jeep/Grand+Cherokee/2012/SUV/ratings.htm