07 town and Country
 

I have a 07 Chrysler Town and Country extended length minivan with the 3.3Liter V6. I drive this vehicle for work and it is always loaded with the equivalent of 3 passengers plus the driver. I recently attained 31.25 MPG on my last tank of gas. This was running 99% highway at the posted speed limit ( 55-70 MPH) and following tractor trailers when possible.
I use a ScanGauge and I always fill up the tank to the brim to get an accurate MPG result.

Cool, yeah, I have a record of ~35mpg (a couple of years back) on my minivan from taking a lonnng highway trip drafting semis.

Just curious, do you have any accessories like vent visors, moulded mudflaps or side steps?

No , the vehicle is completly stock, nothing added. I do run the tires at 40psi.