Well, Samwise, does it have the 8-valve, or 16-valve engine?  On my 2-door, I only got 24 MPG stock, which I thought was strange, because all 4 of my 4-doors got 28 to 32 MPG.  Now that it's "built", I still get 20 mpg.
And that's at 9,000 feet (yes, it DOES make a difference).
Here's the Gnewt on the Whaletail - an obstacle on Chinaman's Gulch trail, near Buena Vista, CO.
