The Audi A8 offers consumers a full-size, 4-door luxury sedan option. This model has been marketed and manufactured since 1994 and is on its fourth generation. The Audi A8 has an optional front-wheel drive or all-wheel drive depending on its specifications. The Audi A8 model is noted for being the very first mass-market car that had an aluminum chassis; all A8 models have used this method since.