Over the past two years I've averaged 23 MPG on daily 18-30 mile commutes, along with other mostly suburban driving. My average speed reported by the trip computer is 27-30 MPH, which gives some idea of how "mixed" it truly is. On longer trips with mostly highway driving I've gotten 26 to 27 MPG, although that can drop off if the average speed is over 80 MPH. Cold weather also has an effect, about 1 MPG for me when the temps are below freezing.