The Audi A6 C6 2.4 Quattro was produced with a total of 177,115 units worldwide.
It featured an inline-5 cylinder 2.4L petrol engine producing 150 kW (204 hp) at 5200 rpm and 280 Nm torque at 3000 rpm.
The engine had a fuel efficiency rating of 9.8 L/100km in the city, 6.1 L/100km on the highway, and 7.4 L/100km combined.
The vehicle's top speed was electronically limited to 250 km/h (155 mph).
It came equipped with Audi's quattro permanent all-wheel drive system as standard.
The A6 C6 2.4 Quattro featured a 5-speed automatic Tiptronic transmission with manual mode.
Its curb weight was approximately 1,605 kg (3,544 lbs) for the sedan version and 1,645 kg (3,629 lbs) for the Avant estate.
The vehicle had a wheelbase of 2,730 mm (107.5 in).
Ground clearance was set at 146 mm (5.75 in), with a minimum clearance of 117 mm (4.6 in).
The Audi A6 C6 2.4 Quattro featured 16-inch alloy wheels as standard.
It came equipped with anti-lock braking system (ABS) and electronic brakeforce distribution (EBD).
Airbags included front, side, and curtain airbags for a total of 8.
Traction control was also a standard feature on the vehicle.
The A6 C6 2.4 Quattro had an average fuel consumption of 10.1 L/100km in urban conditions and 7.3 L/100km on open roads.
It featured an engine oil capacity of approximately 5 liters (1.32 gallons).
The vehicle's boot volume for the sedan was 485 liters (17.2 cu ft), while the Avant had a volume of 545 liters (19.3 cu ft) and an extended floor area of 1,275 liters (45.1 cu ft).
The Audi A6 C6 2.4 Quattro supported up to 7 passengers in its long-wheelbase version.
It featured rear seat backrests that folded forward for increased boot space.
The vehicle's interior featured an adjustable steering column with audio controls, a trip computer display, and an on-board monitor screen.
Audi's MMI (Multi Media Interface) infotainment system was available as an option.
The A6 C6 2.4 Quattro had a turning circle of approximately 11.8 meters (38.7 ft).
Its Gross Vehicle Weight Rating (GVWR) was 1,935 kg (4,273 lbs) for the sedan and 2,020 kg (4,465 lbs) for the Avant.
The vehicle's maximum trailer weight capacity was 1,800 kg (3,970 lbs).
Audi A6 C6 2.4 Quattro vehicles were certified to Euro IV emissions standards.
The vehicle featured a 5-year/100,000-mile warranty as standard in many markets.