Original sentence: "RS" initials stand for RennSport (from , literally translated to "racing sport", actually meaning "motor sport"), and is the Audi marque's highest trim level, positioned above the "S" model specification of Audi's regular model line-up
Edited sentence: "RS" initials stand for RennSport (from German, literally translated to "racing sport", actually meaning "motor sport"), and is the Audi marque's highest trim level, positioned above the "S" model specification of Audi's regular model line-up