it is a 2001.5, packages are as follows:
# Premium Package: Glass sunroof, HomeLink transmiiter in suvisor, Auto dimming inside and outside mirrors
# Cold Weather Package: Heated front seats with individual temperature control; expandable ski sack

link: http://www.audiworld.com/model/s4/01/specs.shtml

the package you speak of:
# Enhanced Sport Package: Leather with Alcantara seat inserts, Silver aluminum belt line trim, Aluminum mirro housings.

The vehicle was manufactured in February 2001