Audi A6 C6 – The Third Generation of an Icon
The Audi A6 C6 is the third generation of the renowned business sedan from the German brand, succeeding the C5 and completely reimagining design, technology, and comfort. This was the era when Audi firmly established itself in the premium segment, offering a blend of elegance, innovation, and refined dynamics.

Internal Designation and Production Years
The C6 generation was produced from 2004 to 2011, with the internal designation Typ 4F. In 2008, the model underwent a facelift that updated its exterior, interior, and technical components.

Design: Evolution of Style
While the previous C5 still retained some angularity, the C6 adopted smooth, aerodynamic lines that became Audi's signature. The Singleframe grille, integrated headlights, and pronounced character lines gave the A6 C6 an elegant and modern appearance.

After the 2008 facelift, the bumpers were revised, the lighting (now featuring LED daytime running lights) was updated, and the grille received minor tweaks. Inside, higher-quality materials, an upgraded multimedia system, and new options were introduced.

Bumper Plastic Marking: >PP-EPDM TV20<

How to Remove the Front Bumper

  1. Open the hood.

  2. Remove the plastic cover under the hood (secured with clips; pull the edge upward).

  3. Unscrew the three bolts securing the top part of the bumper (fastened from top to bottom. Note: The bolts have different shapes).

  4. Remove the three quick-release screws holding the engine compartment underguard and lower section.

  5. Turn the wheels to the side.

  6. In the wheel arches, unscrew the bolts securing the front part of the wheel liners.

  7. Move the wheel liners aside and unscrew two bolts on each side that attach the bumper to the brackets.

  8. Through the wheel arches, unscrew one nut on each side inside the fenders (requires an extension and socket wrench).

  9. Release the clips in the fenders (pull the corners toward you).

  10. With an assistant, carefully pull the bumper forward (watch for wires and hoses).

  11. Disconnect the electrical connectors.

  12. Detach the headlight washer hoses (fluid may leak).

Front bumper mounting locations Audi A6 C6 (2004–2011)

Audi A6 C6 (2004–2011) Front Bumper Mounting Diagram

How to Remove the Rear Bumper

⇒Useful tips on how to remove the bumper and not break anything.⇐

  1. Open the trunk.

  2. In the trunk's side panels, remove the covers (to access the wheel arches from inside).

  3. Unscrew three nuts on each side (two inside the wheel arches and one under the taillights. Note: The nuts have different shapes when reinstalling).

  4. Remove three screws from the underbody (fastened from bottom to top).

  5. In the wheel arches, unscrew three bolts on each side (closest to the edges) securing the wheel liners.

  6. Release the clips in the fenders (pull the corners toward you).

  7. With an assistant, carefully pull the bumper backward (watch for wires).

  8. Disconnect the parking sensor connectors (the main connector is on the right side of the trunk behind the trim).

mounting locations of the rear bumper Audi A6 C6 (2004–2011)

rear bumper mounting diagram Audi A6 C6 (2004–2011)

Model Variants: From Practical to Powerful
The A6 C6 was available in several body styles:

  • Sedan – the business-class classic.

  • Avant Wagon – for practicality without sacrificing style.

  • Allroad Quattro – with increased ground clearance and off-road styling.

The engine lineup was extensive:

  • Petrol: From the modest 2.0 TFSI (170 HP) to the powerful 5.2 FSI V10 (435 HP) in the S6 and the turbocharged 4.2 V8 (450 HP) in the RS6.

  • Diesel: Reliable TDI units in 2.0, 2.7, and 3.0-liter displacements, including biturbo versions. The 3.0 TDI (233 HP) was particularly popular for its torque and efficiency.

Transmissions included a 6-speed manual, 6-speed Tiptronic automatic, and later a 7-speed S tronic (for front-wheel-drive models). Quattro all-wheel drive remained a hallmark feature.

Technology and Comfort
The A6 C6 was packed with cutting-edge tech for its time:

  • MMI (Multi Media Interface) – one of the first multimedia systems with a control joystick.

  • Adaptive Cruise Control – maintained distance to the vehicle ahead.

  • Parking Sensors and Rearview Camera – for easier maneuvering.

  • Air Suspension (optional) – allowed ride height adjustment.

The interior featured high-quality materials, thoughtful ergonomics, and excellent sound insulation. Even base models felt premium, while top trims offered leather, wood, or aluminum accents.

Interesting Facts

  • The Audi RS6 C6 (2008–2010) with its 5.0 TFSI V10 (580 HP) was one of the fastest sedans of its era – 0–100 km/h in 4.5 seconds.

  • The Allroad Quattro combined increased ground clearance with permanent AWD, making it ideal for rough roads.

  • In 2006, Audi showcased a diesel-electric hybrid A6 concept that never reached production.

  • The Audi Lane Assist system, which helps maintain lane position, debuted on the C6.

The Legacy of the A6 C6
This generation marked a pivotal moment for Audi, proving that business sedans could be technologically advanced, comfortable, and dynamic. Many owners still appreciate the C6 for its reliability, solid build, and timeless design.

Today, the A6 C6 is already a classic, but thanks to its robust construction and serviceability, many examples remain on the road. If you're looking for a premium car with character at an affordable price, the A6 C6 is an excellent choice.