Hi and thanks for taking a look. I have practically rebuilt the engine, replaced the cat closest to the front bumper, replaced spark and coils, (previously cleaned maf, cataclean, fuel injector cleaner, and ran valve cleaner thru throttle body). Still showing 11.x miles per gallon while Torque shows 16 or 17mpg. There are no codes thrown (Today my battery went stone cold dead after sitting or short trips). Car has 161,207 miles on it. Its a 2013 Chevy Traverse LT AWD.