The Renault R.S. 01 (or Renault Sport R.S. 01) is a racing car manufactured by Renault, and is based on the Renault DeZir. The R.S. 01 was originally used to compete in their one-make racing series, Renault Sport Trophy, until they decided to expand to GT3. The R.S. 01 is the most powerful one-make racer they have built, and is the only one that doesn't come from a production car.