I took care of it back in january when I move closer to work so I only have a 15 minute drive, now I fill up the Mystique about once a week, maybe two depending if I go home or go to the gf house which is about an hour and 15 from where I live now.
Even though I am closer to work and wouldn't be putting as many miles on my Contour I will mostly drive my Mystique to work as it has been getting about 29~30 mpg over the last few years