Toyota is evaluating my poor mileage right now. They just called to tell me that the 38-42 I am getting on my 2010 is exactly what the expected mpg are for this vehicle. Didn't even know what to say...she said that is what others are getting. My response was to please put that in writing because that means the salesman, sales manager and Toyota have all been incorrect in the representation of this vehicle. And that I have numerous friends that get 10 more mpg at least. I am waiting for her to call back, she said she would need to get back to me. I am currently using a loaner Prius while mine is being worked on...it got 49.7 on the way home, with the air on coldest, blower on high, traffic and high humidity. Mine got 37.8 on the way there with the air on 72, the blower one up from low, and taking the exact same route in reverse...soooooo FRUSTRATED!!!!