On 22 September 2015, VW AG admitted that 11 million cars worldwide had been fitted with software intended to deceive emissions testing. The company issued a profit warning, saying it had set aside $7 billion to fix the fraud. On 23 September 2015, Martin Winterkorn announced his resignation from the CEO position after a crisis meeting of the company board. On 25 September 2015 Matthias Müller was named CEO. Müller was the head of the Porsche marque within the VW corporate umbrella.