Named for Rennsport, the German word for Racing Sport, Audi's RS models are quickly gaining on M and AMG competitors from BMW and Mercedes-Benz. The RS 5 is a high-performance sibling of the A5 and S5 coupes, and new to the U.S. market for 2013. Bred to race, the RS 5 features a 4-liter direct... Read more »
