1982 Audi Quattro
The original Audi Quattro (or Ur Quattro) launches in 1980 as a homologation car for the Group B rally, coming to America for 1982. It doesn't wear an RS badge (because Audi's Rennsport models don't yet exist) but it does mark the birth of Quattro, a highlight of the Audi Sport motorsports division that would eventually be responsible for birthing the RS sub-brand. The Quattro is in production for 11 years, and it becomes a legend in its own right after leaving its mark on the World Rally Championship.