The news came as the carmaker's new CEO was about to fly out to China with German Chancellor Angela Merkel and other business leaders to promote trade in a major export market and try to limit the damage of a scandal that has rocked the auto industry. Almost six weeks after it admitted using illegal software to cheat U.S. diesel emissions tests, Europe's biggest carmaker is under pressure to identify those responsible, fix up to 11 million affected vehicles and convince regulators, investors and customers that it won't make the same mistakes again.