LONDON - Scot Paul Di Resta is returning to compete in the German Touring Car Championship (DTM) for Mercedes this season after failing to nail down a place with a Formula One team. The 27-year-old won the German title in 2007 and then moved into Formula One to drive for Force India. He enjoyed some modest success early on in F1, but disappointed last season and his drive went to Mexican Sergio Perez, who had been discarded at McLaren. "Mercedes-Benz has given me a car I can use to fight for the title," he said. "I realise that it will not be easy," Di Resta said. The Scot drove in the German series for three seasons from 2007, earning six wins, six pole positions and seven fastest laps in his 42 races before switching to Force India, where he scored 121 points in 58 grands prix.–AFP