Chennai is the hub of Automobile industry in India. From bicycles to battle tanks "B to B", everything that moves is manufactured at Chennai. Apart from auto majors, Chennai has a number of plants making auto components, electrical machinery, light engineering goods, consumer durables, leather, textiles, garments and many more.

• Chennai, the capital city of the state of Tamil Nadu, India, is the largest industrial and commercial center of South India.
• Chennai has an economic base anchored by the automobile, software services, medical tourism, hardware manufacturing and financial services. Other important industries include petrochemicals, textiles and apparels.
• Chennai was recently rated as having the highest quality of life among Indian cities ahead of the other three metros and Bangalore, based on the "Location Ranking Survey" conducted by ECA International.
• Chennai has improved its global ranking to 138 in 2006–07 from 179 in 2002–03.
• It has the distinction of being called as the Detroit of Asia, due to its large manufacturing industry.
• The city has about 34,260 identified companies in its 15 zones. Of these, 5,196 companies has a paid-up capital of over ₹ 5 million, about 16,459 companies are in the paid up capital range of ₹ 100,000 to ₹ 200,000, and 2,304 companies have a paid-up capital of less than ₹ 100,000.
• The presence of ports and a long coastline enabled Chennai to develop into an industrial city. Chennai currently houses numerous automobile companies, auto ancillaries, electronics hardware and services sector driven by IT-ITeS companies. There is significant potential for further growth for which the civic infrastructure is being continually augmented.
• Chennai’s economy rests strongly on both the manufacturing and services industry which diversifies the risk and reduces its dependency on a single economic driver.
• India's topmost IT companies like Mahindra, Wipro, TCS, Infosys, IBM, HP etc. and many such leading CMMI-level 5 Corporations have their magnificent offices situated in Chennai.
• Many big shot enterprises that deal with the production of four wheelers as well as two wheelers, namely Ashok Leyland, BMW, Nissan, Royal Enfield, Daimler, Ford, Hindustan motors, Hyundai, Yamaha, Renault and many more such manufacturing plants are present in Chennai.
• Chennai began flourishing with textile industries in the 16th Century and today it has become the only city to enter the "Forbes Top 10-Fastest Growing Cities in the World" race.