What does your driving environment look like?
I drove a 1998 Camry on the freeway at 70 MPH and got 30 MPG.
My Acura has a small 2.4L engine for its 3,400 lb weight and is rated to 22 MPG. I get 31 despite the close-ratio short-geared 6 speed.
The Camry should do much better if you aren't speeding and stay off the brakes.
Here's my Camry graph:
BTW- Hypermiling doesn't necessarily mean slow, it means smart. I don't do slow.