Rolls-Royce Motor Cars Ltd. chairman and CEO Tony Gott has unexpectedly resigned, parent company BMW AG said.

According to Reuters, BMW said it had accepted the resignation and appointed Karl-Heinz Kalbfell to replace Gott, 48, who had held the job since 2002.

A BMW spokesman told the news agency Gott was leaving for personal reasons and had not been asked to go. "The goal of selling 1,000 vehicles has not changed. It has nothing to do with this," the spokesman reportedly said, declining further comment.