The RS6 Avant was powered by a 4.2-liter V8 engine, producing 444 horsepower.
It featured Audi's Quattro all-wheel-drive system with an electronic differential lock.
The car had a six-speed manual transmission and a Tiptronic automatic transmission as options.
The RS6 Avant could accelerate from 0-100 km/h in 5.1 seconds, and the electronically limited top speed was 250 km/h (155 mph).
It came with 18-inch aluminum alloy wheels and 255/40 R18 tires.
The interior featured a sporty design with bucket seats and a leather-wrapped steering wheel.
The MMI infotainment system was introduced as an optional feature in the RS6 Avant.
The car had a maximum towing capacity of 2,100 kg (4,630 lbs).
It came with xenon headlights, fog lights, and a rear spoiler as standard equipment.
The front and rear brakes were ventilated disc brakes with a diameter of 370 mm (14.6 in) at the front and 345 mm (13.6 in) at the rear.
The RS6 Avant had a ground clearance of 123 mm (4.8 in) and an unladen weight of 1,960 kg (4,321 lbs).
It was available with a range of exterior colors, including Brilliant Black, Moonlight Silver Metallic, and Lava Red.
A Limited Edition version of the RS6 Avant was produced for the North American market, featuring unique interior trim and badging.
The engine featured a dry-sump lubrication system to reduce oil consumption.
It had a fuel tank capacity of 80 liters (21.1 gallons) and an estimated fuel economy of 10.9 L/100km in urban driving and 6.2 L/100km on the highway.
The RS6 Avant came with a range of optional features, including a Sunroof, Navigation system, and a Logic7 Sound System.
It had a curb-to-curb turning radius of 12.3 meters (40.4 ft) and an approach/departure angle of 8.9/10 degrees.
The car's suspension featured adaptive air suspension with magnetorheological damping for improved handling and ride comfort.
A "Limited Edition" badge was placed on the rear decklid, indicating its exclusive status in the US market.
In addition to the standard Quattro system, Audi also offered an optional Rear Limited Slip Differential as a standalone option in some markets.
The interior featured Alcantara and leather upholstery options for added comfort and style.
A range of exterior accessories were available, including a roof spoiler, sport exhaust system, and carbon fiber mirror caps.
It came with automatic climate control, cruise control, and a Trip Computer as standard equipment.
In the UK market, the RS6 Avant was sold alongside the regular S6 Avant, but with some differences in specification and pricing.
A range of optional features were available for the navigation system, including real-time traffic information and a DVD-based map update feature.
The MMI infotainment system allowed drivers to control audio, phone, and navigation functions through voice commands or touch screen inputs.
In 2002, Audi announced a recall of the RS6 Avant due to a software issue affecting the Tiptronic automatic transmission.
A range of high-performance tires were available as optional upgrades from Audi's Quattro GmbH division, including the Pirelli Corsa and Michelin Pilot Sport PS2 variants.
The RS6 Avant was praised by critics for its agile handling, responsive steering, and potent V8 engine performance.
In 2005, Audi announced that it would be discontinuing production of the RS6 Avant due to emissions regulations and declining sales.