I've been happy enough but not quite what I expected. I'm averaging 19 - 20 mpg on my daily 10 mile each way commute (most of which is interstate). Driving 70mph I can get about 24 mpg on the interstate but it's hard to keep it at 70mph, especially in Atlanta traffic. The 3 stop lights between my apartment and the interstate and then the 3 more between + 1 stop sign between the interstate and campus are what drag my mpg down. I'm confident that on a long road trip I could get upwards of 23 - 24mpg, I doubt I'll ever see the 25mpg highway listed on the sticker.
Oh ya... '04 Torrid Red A4, stock, 14k miles...