Last summer I visited Iowa, filled up with E10, and took a hit of 3 mpg. If you are filling up with E10, try using regular gas. May help your mileage some.

Cold weather has an adverse effect fuel economy. Warmer weather should help with your milage.

Is your VUE kept in a garage? Does it have a block heater?

Garaging and block heating can help with the warm up time for a car, and improve fuel consumption.

Oh and the cruise really is not that helpful, unless the terrain is really flat. It tends to force a downshift to maintain speed when pulling a hill and/or hitting a head wind and the car eats more gas, when this happens. It might be a good idea to avoid using the cruise control.

Also, avoid letting the engine idle to warm up in the morning, when the engine is cold or waiting for a passenger to come out to the car.

Just some items to look at.

Bob