Mr Nasser, 53, became chief executive in 1999, promising to focus on customer needs. He has run into difficulties in recent months, culminating in a profit warning from the world's second largest car maker, a swathe of redundancies, and losses of more than $1 billion in the last six months. The company has been forced to recall up to 20 million Firestone tyres fitted to its vehicles, and been hit by falling quality, productivity, and tight prices in the international car market.