2012 Audi A6 3.0T Premium quattro 4dr Sedan AWD (3.0L 6cyl S/C 8A)
First time Audi owner ... I could not be happier with the A6.
Considered the BMW 535xi, e350, and Infiniti 37x.
Test drove each 2 different times and each time I was swayed towards the A6.
BMW was quickly eliminated because of the run flat tires.
I have heard several stories that they are costly and prone to issues.
37x was eliminated because the shifting seemed a bit harsh and quirky.
Also, I did not like the navigation.
e350 was eliminated (even though I was offered a 11% off MSRP) because in the end I preferred the ride, feel, and technology of the A6.
For me, the A6 offered the best ride and performance of the others.
Performance and ride
Overall technology and value compared to others in this class