A6 2.8 sedan comes with a 2.8-liter V6 rated at 200 horsepower. It's the only A6 that uses front-wheel drive with electronic traction control; Quattro is a $1,750 option.

All A6 models except the 2.8 sedan come standard with Quattro four-wheel drive, including the Avant wagon, which is otherwise similarly equipped to the 2.8 sedan.

A6 2.7T sedan comes with a 250-horsepower twin-turbo V6, a Torsen center differential, P215/55R16 tires, traction control, and an electronic stability program.

A6 4.2 sedan is powered by a 300-horsepower, 4.2-liter, five-valve V8 engine. In addition to the above, it comes with leather upholstery, leather door trim panels, a HomeLink garage door opener, memory system for seats, automatic dimming mirrors, ski sack, power sunroof, premium 200-wat sound system, and an adjustable leather-wrapped steering wheel with audio and telephone controls. It's equipped with P235/50R16 tires on unique six-spoke cast aluminum wheels.

Audi has extended its warranty package to four years/50,000 miles.

Our 2.8 sedan was equipped with the optional $1,750 Quattro all-wheel drive system; a $625 cold-weather package (heated seats, ski rack); a $1,975 luxury package that included a power glass sunroof, a HomeLink remote transmitter and leather upholstery; a $750 premium Bose sound system; a $550 CD changer; $350 rear side airbags; and a $550 destination charge. All of those options increased the sticker price to $40,750.