The Audi A8 D4 represents the fourth generation of the legendary German flagship sedan, succeeding the rather conservative D3 model and marking a genuine breakthrough in design, technology, and comfort. This model proved that a luxury sedan could be not just a status symbol but also high-tech, dynamic, and somewhat avant-garde.

Generation and Internal Designation

D4 is the factory designation for the fourth-generation Audi A8 (Type 4H). It was developed in the late 2000s when Audi was actively implementing new design solutions and innovative technologies. The MLB platform (Modular Longitudinal Matrix) allowed for a lighter body and more rigid structure, positively impacting handling and safety.

Production Years and Facelift

The fourth-generation A8 debuted in 2009, with serial production beginning in early 2010. The vehicle was offered in two wheelbase variants: standard (2995 mm) and long (3122 mm) - A8 L.

In 2013, the model received a facelift that introduced:

  • A redesigned radiator grille (more angular and expressive)

  • New LED headlights with adaptive lighting

  • Upgraded MMI multimedia system with touch control

  • Additional driver assistance systems

Production of the D4 concluded in 2017 when it was replaced by the fifth generation (D5) with even more advanced technologies.

Bumper Plastic Marking: >PP-EPDM TV20<

Front Bumper Removal

  1. Open the hood

  2. Remove the plastic cover above the radiator grille

  3. Under the cover, unscrew three bolts (fastened bottom-up) securing the upper part of the front bumper

  4. From underneath, remove eleven bolts securing the lower part

  5. Turn wheels to the side (easier with wheels removed)

  6. In wheel arches, remove five bolts per side securing front fender liners

  7. Through wheel arches, use a 10mm socket with extension to remove two nuts per side securing bumper to fenders

  8. Release clips in fenders (pull corners outward)

  9. With assistance, pull bumper forward (mind the wiring). Note mounting studs to avoid paint damage

  10. Disconnect electrical connectors

Front bumper mounting locations Audi A8 D4 (2009-2017)

Front bumper mounting diagram Audi A8 D4 (2009-2017)

Rear Bumper Removal

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

  1. Open trunk

  2. Release lower part of rubber seal

  3. Remove side trunk trim panels

  4. Behind trim panels, below taillights, remove one nut per side

  5. Inside fenders, remove three nuts per side

  6. From underneath, remove bolts (fastened bottom-up) securing lower part of rear bumper

  7. In wheel arches, remove three bolts per side securing rear fender liners

  8. Release clips in fenders (pull corners)

  9. With assistance, carefully pull bumper backward (avoid scratching paint with studs)

  10. Disconnect parking sensor connectors (if equipped)

mounting locations of the rear bumper Audi A8 D4 (2009-2017)

Rear bumper mounting diagram Audi A8 D4 (2009-2017)

Design and Interior

The Audi A8 D4 appeared substantial yet not overly ostentatious. Its design featured sharper lines, a large Singleframe grille, expressive LED lighting elements, and strict yet elegant proportions.

The interior followed Audi's finest traditions: impeccable material quality, thoughtful ergonomics, and minimal excess. The MMI display took center stage, with a touchpad for navigation control added from 2014.

Noteworthy features included:

  • Massage and ventilation seats - among the best in class

  • Bang & Olufsen audio system - 19 speakers and 1400W output

  • Night vision assistant - system illuminating only necessary road sections without blinding oncoming drivers

Technical Specifications

Under the hood, the A8 D4 offered a wide engine range:

  • Gasoline: from 3.0 TFSI (290 hp) to 6.3 W12 (500 hp)

  • Diesel: 3.0 TDI (250-313 hp) and 4.2 TDI (385 hp)

  • Hybrid version A8 Hybrid (2.0 TFSI + electric motor, 245 hp)

Transmission was exclusively an 8-speed Tiptronic, while quattro all-wheel drive (with Torsen self-locking differential) came standard on all versions.

The most technologically advanced version was the A8 L W12 - the flagship with a 12-cylinder engine achieving 0-100 km/h in 4.7 seconds.

Interesting Facts

  • First Audi with laser headlights (2014 post-facelift), doubling the range of conventional LEDs

  • Chinese version (A8 L Security) featured VR7 armor protection against heavy weaponry

  • Hybrid version proved unpopular due to minimal electric-only range (just 3 km)

  • In "The Avengers" (2012), the A8 D4 served as Nick Fury's personal vehicle

Conclusion

The Audi A8 D4 stands as an exemplar of engineering excellence and design mastery. It successfully combined luxury, technology, and dynamic performance, remaining one of the most balanced flagship sedans of its era. Even years after production ended, the D4 maintains a modern appearance and continues to be coveted by premium sedan enthusiasts.