so my other car is a toyota prius and it's definatley taught me alot about squeezing fuel economy from any car, hybrid or not.

i got my xterra a few weeks ago, and the first week I went through a tank of gas in a matter 4 days... as an experiment, the next week I took it easy, 'pulse and glided' it more and I'm still about half-tank full.

the X has a pretty serious engine but I'm convinced you could pull 27+ mpg if you're careful about it. On the other hand, don't get carried away! have fun out there...