My best tank so far - 727 mi.
 

2000 Honda Insight, 5-speed, lightly modded.

727.3 miles, 74.4 mpg.

2000 Honda Insight Gas Mileage (Outasight) - EcoModder.com

Very nice!

Mine is definitely climbing with the warmer weather.

Nice work! All that for less than ten gallons, and a new personal best.

I'd love to have an Insight. I love my VX, but I think the Insight is cool looking and like that it won't rust out. BTW, the warmer weather is helping my VX numbers as well. I'm probably going to be somewhere between 58 and 59 mpg's on the tank I'm on now. I have yet to break 600 miles on a tank, but getting closer with the warmer weather. I wish it wasn't so hilly where I live. Otherwise I know I'd be in the low 60's already.

My best MPG tank was 48.6 on just 431 miles and 8.869 gallons.
My best Miles on a tank was 526 miles using 10.830 gallons for 48.57 MPG. (I never pumped more than 11.02 gallons and that was when the range hit 0 for 14 miles before filling up. I always stop fueling at first click)
*edit: I got 556 miles using 11.46 gallons after 15 miles on empty, recently.