Damn ya'll. You are making me worry. I get regular maintenence and my ride only gets about 320 miles to 14.5 gals. That aint' so hot. I shift almost always before about 4500 rpm.
The day I bought it I drove it from Tampa to Atlanta 504 miles on 15 gallons! All hwy so that's obvious.
I'm going to try to drive conservative to see what it does.
I love my friend's BMW. IT has a MPG needle that helps you keep low on the consumption when driving.