RH77 has written up another informative review, this time of the Vibe/Matrix twins.
The low-down: EcoModder Tested Mileage:
35.5 MPG @Average Speed: 57 MPH over 455 miles in temps of 40F - 55F. That includes hitting rush hour traffic on the return. Not bad!
2003-2008 Pontiac Vibe / Toyota Matrix (35.5 MPG)