Here is the professional's comparison for mid-size family sedans

http://www.caranddriver.com/comparisons/2013-chevrolet-malibu-eco-vs-2012-honda-accord-ex-l-2012-hyundai-sonata-se-2012-kia-optima-ex-2012-toyota-camry-se-2012-volkswagen-passat-25-se-comparison-tests