Bigger, more luxurious, and more expensive than the regular A8, the A8 L is Audi's flagship of flagships. It features a well-appointed interior with an extravagant amount of space for rear-seat passengers and a choice of V8 or V12 powerplants.
Measuring in at a lengthy 207.4 inches, the A8 L is 5.4 inches longer than the standard A8 sedan, with that extra length translating directly to more rear-seat legroom.
As the A8 L is designed to chauffeur around top-level titans of industry, the rear cabin has been substantial improved, including such subtle details as wood-trimmed roof-mounted grab handles and a four-zone air conditioning system with 25 adjusting motors.
For those wanting even more luxury, the A8 L can be ordered with power reclining rear seats complete with heat, ventilation and massage function, as well as a full-length rear center console.
The latest A8 L utilizes Audi's new, super-flexible "MLP" architecture, in a stretched format. This is the same chassis used for the A4, A5 and the upcoming A7. The A8 L sees extensive use of aluminum and magnesium in an effort to keep the large sedan's weight down.
The A8 L also feature the newest version of Audi's quattro all-wheel-drive system, which features torque vectoring. This distributes drive individually between each axle and between the rear wheels for improved traction and stability.
The A8's multimedia interface (MMI) combines the standard (in the U.S.) navigation system with a touchpad. MMI touch enables the driver to control many functions intuitively such as inputting the navigation destination by writing the letters on the pad with the touch of a finger.
The MMI system can recognize complex scenarios and make anticipatory decisions to assist the driver. The new technologies include a night vision assist with marking of detected pedestrians, the Audi pre-sense safety system, as well as a speed limit display.
Another high-end solution on board the new A8 is full LED headlights, which use light emitting diodes for all light functions. They give the luxury sedan an unmistakable appearance even in daylight and even more so after the fall of darkness.
Combining the high-tech MMI system and LED headlights, Audi's navigation unit predicts the road ahead and adjusts the light pattern accordingly. This function will enable special output in highway settings, and even activate a cornering light for wider-angle illumination when entering an intersection.
On the safety front, Audi boasts 25 percent increased static torsional rigidity due to new welding technologies, which it claims lead to improved fuel economy and handling characteristics. The A8 L also features Audi Braking Guard to warn drivers of potential impacts, as well as automatic emergency braking in the event of an unavoidable accident to minimize impact.
The normal A8's 4.2-liter FSI V8, which makes 372 horsepower and 328 lb-ft of torque, is standard. Fuel economy with the 4.2 is rated at 18 mpg in the city and 28 mpg on the highway. A W12 exists for those hungering after more power - this 6.3-liter motor produces 500 horsepower and 463 lb-ft of torque while returning 14/21 mpg.
Key Competitors
Rivals to the A8 L with a similar emphasis on rear seat comfort include long-wheelbase versions of the BMW 7-Series and Jaguar XJ along with the Mercedes-Benz S-Class, which comes standard in LWB form.