With 26K miles, I have a total average of 23.8 with the highest MPG of 28.0. Now my wife when she is in Florida, lives in a location where you have to drive 10 miles for a gallon of milk and the speed limit varies from 35 to 55 and she can get almost 35 MPG average. So speed is crucial to the MPG of this car. I think anything over 55 and it drops the MPG significantly. My 2012 Buick LaCrosse which was much heavier and had a 310 HP V6 had an overall MPG of 21.3 and a high of 27.7 which is about the same as my OB.That is around what I get with mixed driving. The only way I see over 30 mpg is driving under 65 mph on highways with no hills. Around town in the winter I have seen as low as 13 for a tank.
I am very disappointed. This is the first car I have owed that I have not gotten at least the claimed MPG. I usually exceed it.
Keep in mind that some folks here are relying on the vehicle's computer for their mileage estimates, which I believe are a bit "optimistic". The one on my car overestimates my mileage by ~7%.
2017 2.5i with ~22K.