[3] Sundram Iyengar later quit his jobs[4] and laid the foundation for the motor transport industry in South India when he first started a bus service in the city of Madurai in the year 1911.

He also started a factory for rubber retreading, besides two more concerns, the Madras Auto Service Ltd and the Sundaram Motors, a division of T. V. Sundram Iyengar & Sons Ltd.

T. V. Sundram Iyengar accepted his daughter T. S. Soundaram, then a teenage widow who remarried G. Ramachandran (social reformer), under the compulsion of Mahatma Gandhi.

[10] He was praised by Rajaji, a senior statesmen and governor general of India at that time, for his gesture of retiring and handing over the trade to his sons.

[11] He died in the early hours of 28 April 1955 at his residence in Kodaikanal at the age of 78 and at that time was survived by his wife, four sons and three daughters.

[5] Sundram Iyengar was honoured by the Government of India by unveiling bust in bronze and in marble in the city of Madurai, Tamil Nadu on 7 August 1956.