Bought an 08 touring 6. Stealer filled the tank and the car had 6 miles on it total. I drove over 500 miles and only had to put 9.5 gallons in it. It was 10% freeway and 90% city all with the AC on. My 4x4 GMC 2500 Diesel 9,000LB truck is sitting parked with a for sale sign on it (did NOT get any calls either). Man I could not be happier about the MPG on the Prius. If it goes up after break in Its just icing on the cake.
Congratulations, problemchild, on your new car and on great milage. You must live in a warm flat area.