It had a wheelbase of 2750 mm and a length of 4738 mm.
The C4 generation A6 was offered with a range of inline-four, V6, and V8 petrol engines as well as a single diesel engine.
In some markets, the A6 C4 was sold as the Audi S6, which featured a more powerful engine and sport-tuned suspension.
The car had a curb weight of around 1650-1750 kg depending on the trim level and engine choice.
In 2001, Audi introduced a facelifted version of the A6 C4, which featured revised exterior styling, updated interior features, and some mechanical changes.
The A6 C4 was available with a range of transmission options including manual, automatic, and semi-automatic gearboxes.
Some trim levels of the A6 C4 came with Audi's Quattro all-wheel-drive system as standard or optional equipment.
In certain markets, the car had an optional "S-line" package which added sporty styling elements such as a rear spoiler and 17-inch alloy wheels.
The interior design featured Audi's typical controls for the time period, including a rotary gear selector and steering wheel-mounted buttons.
Some special edition versions of the A6 C4 were produced, including the "Avant" wagon version with increased cargo capacity.
There was a limited-production Audi S6 Plus model that featured a supercharged V8 engine producing 444 horsepower.
The car had an MRP (Maximum Recreational Power) mode in some trim levels which enabled drivers to experience an artificially heightened engine performance for short periods of time.
Some models were equipped with an "Adaptive Cruise Control" feature, allowing the driver to maintain a set speed while following the vehicle ahead.
The A6 C4 had a front grille featuring 3 horizontal bars in its standard form and could be adjusted to different sizes and designs depending on trim level.
In Australia, Audi offered a unique "V8 Plus Package" for customers that added an extra power boost from 235 horsepower up to 240 horsepower to the standard V8 engine.
Some markets had the A6 C4 available with optional bi-xenon headlights featuring dynamic beam adjustment.
The car was also available with Audi's Parktronic parking sensor system which provided audio and visual warnings when the driver approached an obstacle in their blind spot or behind the vehicle.
There were a number of "S-line" trim levels available for different engine options, including diesel and petrol variants.
The last A6 C4 rolled off the production line in 2004.