2015 Audi A6 Sedan 2.0T Premium Plus quattro 4dr Sedan AWD (2.0L 4cyl Turbo 8A)
This was my first Audi and so far, for the most part, it's been great. I opted to go with the 2.0 over the 3.0 and I don't regret that decision in the least. As the other reviews state, it gives you more than enough power. It doesn't have the same "sound" of the 3.0, but trust me, the zip is there. Plus, the gas mileage is much better. The interior has a few quirks, but the materials are top notch. One thing to note - the breaks squeak in cold weather. Audi is aware of the problem and has no fix for it. By cold weather, I mean below 20 degrees. For a luxury car, I find this rather annoying.
The nav system gives you options to choose based on real time traffic which is helpful. The trunk is huge. And you have to love a heated steering wheel with the cold weather package.
Fixing the squeaking breaks would be great. Also, and this will sound odd, but there is no way to turn off the radio, without shutting down the entire navigation/MMI system. If you push the volume button in, it will mute the radio. Let's say you do that and then turn off the car. When you turn it back on, the radio turns on automatically.
The overall interface for the MMI is a little cumbersome. You get used to it eventually. However, I previously had a BMW and their interface was a bit more intuitive.