Welcome to EM, abobalik! Dang, I can't believe there's 20 pages in this thread!
The Vibe should get you some good results. Auto transmission, I presume?
My wife is driving the Vibe now. She promises to keep track of her FE, so it will be interesting to see how she does. I set the bar at a decent 38ish on the lifetime. If I woulda tried harder, I'm sure it could have been over 40. It's a lot of fun telling people you get 40 mpg in a Vibe.
fchen7, thanks for the $; you really didn't have to- but thanks!