It's pretty accurate for me, I get 300 miles on 17 gallons, so just over 17mpg. My drive to work is exactly 25 miles of combined City Streets & about 10 miles of Freeway.
Cost to Drive 25 Miles - $5.47. Ouch - not getting any better either. $3.59 today, $3.39 last week, so by the end of June we'll be sitting on $4.00/gal I imagine. Oil sure as hell ain't getting any cheaper.
My little 4Banger 4Runner gets pretty good gas mileage right now, but next weekend she gets some armor welded on, so the poor girl is getting heavier and less economical week by week