BERLIN, May 30 - World champion Mika Hakkinen should quit McLaren at the end of this season to find fresh motivation in Formula One, former world champion Niki Lauda was quoted as saying on Tuesday. "If he wants to carry on racing with full motivation, then he has to leave McLaren," the Austrian told Germany's Die Welt daily newspaper in an interview. "I can speak from my own experience: I left Ferrari after four years because I got fed up," said Lauda, who won the Formula One title in 1975 and 1977 with Ferrari and 1984 after moving to McLaren. Finland's Hakkinen, who has driven for McLaren since 1993, has denied persistent rumours he would quit the team at the end of the season. But Lauda said there could be a grain of truth behind the paddock gossip: "It would certainly match the impression he has created," he said. ............................................. Tuesday, 30 May 2000 14:06:09