The 2.7L turbocharged engine in the A6 C5 produced 250 PS (184 kW; 247 hp) and 350 Nm of torque.
The car had a top speed electronically limited to 245 km/h (152 mph).
The 0-100 km/h (0-62 mph) acceleration time was around 6.7 seconds.
The A6 C5 2.7 Turbo used an advanced exhaust gas recirculation system to reduce emissions and increase efficiency.
Audi's Quattro permanent all-wheel drive system was standard on the car, with a distribution of 70% power to the front wheels and 30% to the rear wheels under normal driving conditions.
The A6 C5 had a six-speed Tiptronic automatic transmission as an option.
In addition to the manual transmission, the S-Tronic semi-automatic gearbox was also available on some trim levels.
The car featured Audi's advanced Electronic Stabilisation Programme (ESP) for improved stability and control.
Some trim levels came with a lowered sport suspension, which reduced ride height by around 20 mm.
The A6 C5 had a more aerodynamic front bumper and side skirts compared to the standard models, giving it a slightly different visual appearance.
The car's interior featured Audi's advanced Media Package, including an eight-speaker sound system with a built-in CD player and cassette deck.
The driver information display in the instrument cluster showed vital information such as engine oil temperature, oil pressure, and battery voltage.
Some trim levels came with a six-CD changer and a radio/MP3-compatible head unit.
The car's seats were designed to be more comfortable and supportive, with features like adjustable lumbar support and power adjustment for the driver's seat.
In some markets, the A6 C5 2.7 Turbo was offered with a more aggressive "S-Line" exterior package, which included a distinctive front spoiler, side skirts, and a rear diffuser.
The car had a range of alloy wheel options available, including 16-inch and 17-inch designs.
Some trim levels came with a more luxurious leather interior package, featuring perforated leather seats and a contrasting stitching pattern.
The A6 C5 was one of the first Audis to feature an advanced rear parking camera system as an option.
In some markets, the car was offered with a range of exterior colors not available on standard A6 models, including metallic silver and dark red finishes.
The 2.7L turbo engine had a specific oil change interval of every 15,000 km (9,320 miles), depending on driving conditions.
Audi's advanced Adaptive Cruise Control system was offered as an option on some trim levels.
Some trim levels came with a "Driver's Package", which included features like a driver's seat memory function and a more supportive steering wheel design.
The car's engine management system allowed for adjustment of the turbo boost pressure, depending on driving conditions.
In 2002, Audi introduced an updated version of the A6 C5 with revised styling, new features, and improved performance from the 2.7L turbo engine.
The A6 C5 was one of the first Audis to be built in a dedicated production facility at Ingolstadt, Germany.