Hi, New here on this forum. thought I'd say hi, and introduce myself. I'm currently a BMW 330D owner (e90) and an about to move back to Audi. Had a B6 3.0 Quattro before the beemer. I'm considering either a B8 3.0 TDI Quattro saloon or an S4 Saloon. Got them priced up, from the Audi website, and for the options I want, there's about 3K difference in price between them. Of course heart is going toward the S4. Real world though, how many miles per tank of fuel to you think you could achieve with the S4? Also, do you think servicing costs will be much different between these 2 models? Thanks, Yargnat.