Despite its name, the A6 3.2 features a 3.1-liter V6 rated at 255 horsepower and 243 pound-feet of torque. The A6 4.2 has a 4.2-liter V8 that puts out 350 hp and 325 lb-ft of torque. The sedan is available with either engine, while the wagon comes with the V6 only. Both engines feature direct fuel-injection technology, which optimizes performance and efficiency via ultra-precise fuel delivery. The 3.2 front-wheel-drive sedan has a continuously variable transmission (with driver-selectable shift points), while all other A6s come with a six-speed automatic transmission and the Quattro all-wheel-drive system. Though the V6 is still a little short on low-end torque, it pulls with authority through the midrange. We timed a 3.2 Quattro sedan at 7.9 seconds from zero to 60 mph. As expected, the V8 is as smooth and potent as any eight-cylinder in the class and posts a 0-60-mph time of 7.1 seconds.