<p>I have an '05 Prius with over 100k miles on it. I traded my '03 Prius in for it. There are so few reports of Prius batteries being replaced that you’ll hard time finding them. </p>
<p>I average about 52 mpg and I do think that driving style is key. When my daughter first started driving the Prius, she always destroyed my gas mileage. Then she took it back to college with her and perfected the technique. I have been driving “her” car so when I now drive the Prius, I destroy her gas mileage.</p>