As with most cars, the observed fuel mileage is more a function of the driver and his driving style than anything else. I've seen as low as ~16MPG (lots of idling) and as high as ~26MPG (long road trip), but my '06 usually runs 19-20MPG in mixed driving. I tend to drive more on the highway, but my morning commute is about ten miles with about 20 stoplights...