Originally Posted by e92miami
A6 with S Sport and Bose is starting at 56k once you get some goodies you are over 60k a very similar optioned out F30 M Sport is about 54k
Audi will offer the A6 2.0T Quattro + ZF 8spd AT from 2013 model year. A well equipped Premium Plus version will start under $50K. I suspect a similarly equipped F30 xDrive will cost about the same as this model.
The A6 2.0T will of course be slower, but it's also a better car in many other areas. The A6 is also supposed to be sportier than the 5er.
My E90 328i is very lightly equipped M-sport model. If I build a F30 M-sport with similar option content, it comes out to be ~$4K more. Of course the F30 has some of the things that my 328i is missing, most notably iDrive and basic Bluetooth. But still, it seems you do pay quite a bit for the extra interior room + improved power and efficiency.