Hey, great input. thanks for sharing!
Cold weather is an mpg killer. Take a look at
my car in the real mileage database. You'll see the winter temp dip.
The June/July dips are anomolies simply because I did a lot of fast driving last year. I hope to bring those up a bit this summer.
My last tank was 73.9. My current tank is at 80.1 on the Dash gauge after ~200 miles.
If you get a chance you may want to consider adding your Insight to the database as well.