I am happy to report getting 37 mpg low grade driving no serious uphills and 36 mpg cross country driving all while driving conservatively at 65mph. 2010 2.4L ecotec 6 speed automatic. All this after I started to noticed lost in mpg, serviced injectors 2 were clogged due to carbon/oil in intake/ runners all cleaned up. Installed a home Depot catch can to prevent it from happening again at the pvc line. Bought it used a few months ago is the best I've seen this car raned.