1942 - Hindustan Motors Limited was incorporated at Port Okha in Gujarat as a small assembly plant for passenger cars.
1948 - Hindustan Motors Limited shifted its activities to Uttarpara in West Bengal and set up facilities for manufacture of cars and trucks.
1971 - Hindustan Motors Limited further diversified its activities by setting up an Earthmoving Equipment Division at Tiruvallur, near Chennai, Tamil Nadu for the manufacture of Earthmoving equipments such as dumpers, front-end loaders, crawler tractors and so on.
1985 - Hindustan Motors Limited commenced a Power Products Division at Hosur, Karnataka for manufacture of heavy duty transmission required for Earth moving Equipments.
1986 - The Commercial Vehicle Division for the manufacture of Heavy Commercial Vehicles at Vadodara, Gujarat was commenced. Due to increase in project cost and material cost arising out of adverse exchange fluctuation, the project was abandoned. The company sold a part of the assets of this division to General Motors India Limited, for manufacture of "Opel Astra" range of passenger cars in the premium segment.
1987 - Hindustan Motors Limited commenced production of petrol engines and transmissions at Pithampur, Madhya Pradesh, in collaboration with Isuzu Motor Company, Japan.
1996 - Hindustan Motors Limited modernized, upgraded and expanded its three existing divisions Earthmoving Equipment Division, Power Plant Division and the Uttarpara Plant.
1997 - Hindustan Motors Limited began the production of the Road Trusted Vehicle.
1998 - Commenced the Mitsubishi Lancer Car project.
2001 - The Earthmoving Equipment Division plant was sold off to Caterpillar, USA.
2002 - Launch of the Mitsubishi Pajero (in collaboration with Mitsubishi Motors, Japan), in India.
2004 - Components Business ( PUP-Pithampur and PPD Hosur ) transferred to AVTEC a company jointly held by HM, Actis and CK Birla Group.