He has been the Managing Director and Chief Executive Officer of Maruti Suzuki India Ltd since 2013.
Ayukawa who was earlier the Vice President of SIAM succeeds Rajan Wadhera, Senior Advisor at Mahindra & Mahindra Ltd.
Vinod Aggarwal, Managing Director and Chief Executive Officer of Volvo Eicher Commercial Vehicles Ltd, will continue as the Treasurer.
SIAM is a not-for-profit apex national body representing all major vehicle and vehicular engine manufacturers in India. It works towards supporting sustainable development of the Indian automobile industry with the vision that the country emerges as a destination of choice for design and manufacture of automobiles.