Original sentence: The "RS" initials stand for RennSport (from , literally translated to "racing sport", actually meaning "motor sport"), and is Audi's ultimate 'top-tier' high performance trim level, positioned a noticeable step above the "S" model specification level of Audi's regular model range line-up
Edited sentence: The "RS" initials stand for RennSport (from German, literally translated to "racing sport", actually meaning "motor sport"), and is Audi's ultimate 'top-tier' high performance trim level, positioned a noticeable step above the "S" model specification level of Audi's regular model range line-up