The Audi A8 is a full-size executive car built by the German automaker Audi to replace the V8 model as its flagship offering. First brought to the market in 1994, most versions of the A8 have featured quattro all-wheel-drive as standard as well as a Multitronic or Tiptronic automatic transmission. Two generations of the A8 have been produced in both short and long wheelbase.

The A8 debuted in Europe in 1994, although it wasn't until 1997 that it became available in North America. Unlike the V8 model, which was built on an existing steel platform, the A8 debuted on Audi's then-new D2 platform, an all aluminum space frame which helped to significantly reduce weight without sacrificing rigidity. The saloon was offered in both the A8 and the A8L long-Wheelbase version. The A8L adds five inches of rear legroom. In addition to being the world's first car built on an entirely aluminum platform, updates to the car in 1997 included the addition of six interior airbags, making the A8 the first vehicle to be so equipped. For 1997, the new A8 was available with either front-wheel drive or all-wheel drive quattro. The FWD models are powered by a 2.8L V6 producing 193 PS (190 hp/142 kW) and 3.7L V8, while the quattro received a 4.2L V8 producing 310 PS (306 hp/228 kW). The A8 is available with standard luxury amenities, including dual-zone climate control, wood and leather interior trim, 14-way power and heated seats, and a premium Bose audio system. Audi's flagship received new colors and restructuring of option packages in 1999. The warm weather package added a solar sunroof that allows the air conditioning and heating to run when the engine is turned off. Changes to all models included a larger passenger mirror and a first aid kit located in the rear armrest.