Both cars looks terrific in these photos.
When it comes down to the interior, the Audi is most desirable.
Concerning the exterior, the Mercedes is a bit more special to look at.
What a wonderful dilemma to be in when you're actually going to buy one.

Further more, not that it really matter, but did anyone notice the Audi's rear interior doorpanel isn't really a perfect fit? You can see a little bit of the color red of the exterior door.
I believed I saw that kind of panel gaps/fits before in Italian cars but from Audi I expected perfection.
It's just a minor disappointment aside of a very close to perfect car.