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Audi A6 is available in a variety of models with a full selection of engines. Each has a distinctive personality. Quattro all-wheel drive comes standard on all models except the A6 3.0 CVT FronTrak. All are four-door sedans except the A6 3.0 Avant wagon.

A6 3.0 ($35,700) comes standard with the 220-horsepower 3.0-liter V6, continuously variable transmission (CVT), front-wheel drive, traction control (anti-slip regulation or ASR), antilock braking (ABS), electronic rear brake pressure regulation, an electronic differential lock (EDL), and automatic climate control with filter. A6 3.0 Quattro ($37,450) adds Audi's quattro all-wheel-drive system and a five-speed automatic transmission with Tiptronic, which allows the driver to shift manually when desired. A6 3.0 models come standard with leather seating surfaces.

A6 3.0 Avant ($38,650) is the station wagon version. (Avant means station wagon at Audi.) It comes with the 3.0-liter V6, five-speed Tiptronic automatic, and Quattro all-wheel drive.

A6 2.7 T ($40,850) is the rowdy member of the A6 family, equipped with a 250-horsepower turbocharged V6. It's the only A6 offered with a manual transmission, a six-speed gearbox. It's also available with a five-speed automatic for the same price. Sport seats are available as an option ($500), but 2.7 T comes standard with leather seating surfaces.

A6 4.2 ($47,800) borrows the V8 engine from the mighty Audi S8. Stuffing this big 300-horsepower V8 into the A6 required Audi to stretch the nose slightly. While they were at it, they expanded the fender flares to cover wider tires.

S6 Avant ($58,700) is a high-performance sport wagon powered by a 340-horsepower V8. With that much power, the Avant's rear will be familiar to other drivers who try to keep up. The S6 Avant comes with the highest level of equipment, including heated front sport seats with 12-way power lumbar supports, gray birch wood trim, an in-dash six-CD changer and a 200-watt Bose audio system, and much more.

RS 6 (about $85,000) is a world-class luxury sports sedan with the heart of a race car. It's powered by a twin-turbocharged V8 that generates 450 horsepower and 415 foot-pounds of torque. Big brakes, a sports suspension and Audi's Dynamic Ride Control make for a complete, well-balanced setup. Only 1000 will be sold before the A6 line is redesigned.