The C5 generation Audi A6 was launched in 1997 and was based on the B5 platform.
The 2.8 V6 engine used in the A6 was developed by Volkswagen and produced 174 horsepower at 6000 rpm.
The engine had a displacement of 2794 cc and featured a 60-degree vee configuration with 24 valves, single overhead camshafts per bank, and electronic ignition.
The C5 Audi A6 was the first generation to feature quattro four-wheel drive as an option on all trim levels.
In Europe, the 2.8 V6 A6 was available in various trim levels including base, Progressiv, and Avant with different features and equipment options.
The A6's exterior design featured a more angular look compared to its predecessor, with a revised front bumper, side sills, and rear apron.
The interior of the C5 Audi A6 was updated with new trim materials and ergonomic adjustments, including a more curved dashboard and an updated instrument cluster.
In 1999, the Audi A6 2.8 V6 received an update to the engine management system which resulted in a slight increase in power output.
The C5 Audi A6 had a claimed 0-60 mph time of 7.4 seconds with the manual transmission and 7.2 seconds with the Tiptronic automatic.
In some markets, the A6 was offered with a S-line trim package that added sport-tuned suspension, unique alloy wheels, and a revised exterior design.
The Audi A6 C5 generation received a facelift in 2000 which included updated front and rear bumpers, new LED taillights, and an updated interior with wood trim inserts.
In the US market, the A6 was only available as a sedan until the 2002 model year when the Avant (wagon) body style was reintroduced.
The 2.8 V6 engine used in the A6 had a service interval of 15,000 miles or every 3-4 months with normal driving conditions.
In some regions, the Audi A6 C5 generation could be ordered with an optional "Comfort Package" that included items such as heated and ventilated seats, a sunroof, and an in-dash CD player.
The Audi A6 C5 was also available with various engine options including a 1.8L turbocharged inline-4 for European markets, which produced 150 horsepower.
In the UK market, the A6 was offered with a range of transmission options including a 5-speed manual and a 4-speed automatic, but only the Tiptronic automatic was available in combination with the V6 engine.
The Audi A6 C5 was produced until 2002 when it was replaced by the new B6 generation.
In Australia, the 2.8 V6 A6 was available from 1997 to 2001 and came standard with a 4-speed automatic transmission and front-wheel drive as the quattro system was an additional cost option.
The C5 Audi A6 had a claimed fuel economy of around 24-28 mpg in combined urban and extra-urban driving conditions, depending on the trim level and market.
In Germany, the A6 2.8 V6 was available with various interior materials such as leather, Alcantara, or wood trim inserts for added customization options.
The Audi A6 C5 generation had a number of technical updates throughout its production run including improved engine efficiency and additional safety features.
In some European markets, the A6 2.8 V6 was available with an optional rear differential lock system to enhance traction on slippery surfaces.
The C5 Audi A6 had a maximum towing capacity of up to 4,400 lbs (2000 kg) depending on the region and engine configuration.
In Japan, the A6 2.8 V6 was available from 1999 to 2001 with unique interior trim materials and added features such as cruise control.
The Audi A6 C5 generation won several awards during its production run including the 2000 Car of the Year award in Turkey and the "Best Medium Class Vehicle" title at the 2001 German Automotive Award ceremony.