When I first drove an A6, it was the old 2.8 litre model w/ 16" wheels and (IIRC) 215 mm aspect tires. Unimpressed. Then drove the 2.7 t (biturbo), was impressed how the motor transformed the car and bought it. Soon thereafter, switched to 18" 235 aspect wheels/tires and, while not a canyon carver, have been impressed ever since.
I am highly tempted, however, these days by the new offerings via Ingolstadt.....