Audi stationwagon question

[GaidosIII@aol.com]

All,
 My wife and I were driving along I280 here in the bay area Sunday when we
were passed by an Audi wagon. It was similar to stone gray metalic in color,
had no badges,it had headlight wipers and four exhaust pipes out the rear
(two on each side of the rear valance). It was a late 80's early 90's model
and for all intents and purposes looked completly stock.
 What model was this Audi?
Thanks
Anton