Took a look under the hood and didnt see anything disconnected or out of place. I ran the Forscan diagnostics and it didn't show any faults for the MAF or the injectors. Did get some DTC codes but unrelated to anything to do with gas mileage attached are screen shots. Is the reading for the Mass air flow normal for a warmed up car at idle in park?
PS: It won't let me upload the jpeg screen shots don't know why. Size is small enough. Anyway MAF reading is 3.43 g/sec. I get no faults on the MAF, EGR and the fuel injectors