Ok I did it finally!! I went 513 miles in one tank of gas! I have been trying to do this every since I purchased my '01 Prius last November.
I purchased my wonderful car used over Ebay, got a great dead but I had to drive it back from CO to OH, oh no big deal, I guess the only way to get use to the car. :lol:
I broke the 500 mile barrier during the month of March in Ohio, when it was hovering about 60 to 75 degrees for about 2 weeks. Those comfortable temps really do make a difference to the batteries.
When I filled the tank I pumped in about 11.3 gallons and manually estimated the mileage to be about 45.4, the computer estimated the mileage to be 51.6, which is not to comforting to see that big of a descrepency.
Most of my driving is done in the city-secondary roads, sub 45 MPH, One time before taking a highway trip, after only about 155.1 miles I filled up my tank, the computer said I was getting 57.2 MPG and I manually computed the mileage to be 59.5, I added a wopping 2.605 gallons. That amount was after the 3rd or 4th click of the gas pump saying the tank was full, so I squezed in a little more.WOOHOO! That made my day.
I hope other people are having good results as I am with my prius.
Jason- Dayton, OH -- '01 Silver Prius