 For the 2005 season, Mercedes placed Green in the DTM.He drove one of its customer cars - a 2004 C-class - run by Persson Motorsport, with which he achieved a 6th-place finish on his debut, secured two pole positions and finished 6th overall in the championship standings, with a total of 29 points.2006 saw him promoted - along with his teammate from Persson, Bruno Spengler - to the factory Mercedes-AMG line-up, run by H.W.A.