what mpg do non-chipped S4 owners get ?

20.8 mpg - it fluctuates a bit depending on traffic, dry roads etc.

19.9 MPG with mixed driving in midwest weather and some "power displays" LoL

BTW - seems to be better with 94 octane

12-14 mpg! Unless I am on a long drive.

22 - 24 during normal commuting, 28 on trips

16 - 17 mpg

19.4 for my entire first year....
 

<ul><li><a href="http://ctny.audiworld.com/mark/s4/mileage/">http://ctny.audiworld.com/mark/s4/mileage/</a</li></ul>

That's about what I saw too

Me too...my trip computer average is at 22.5 and I haven't reset it in forever.
 

On long highway trips though I do get higher though, like 27-28 mpg.