Hindustan Motors manufactured the Ambassador and Landmaster motorcars (based on 1956 Morris Oxford Series III), both immensely popular Indian automobiles from 1957 to 2014.

[3] On 11 February 2017, Hindustan Motors executed an agreement with Peugeot SA for the sale of the Ambassador brand, including the trademarks, for a consideration of ₹80 crore.

Commencing operations in a small assembly plant in Port Okha near Gujarat, the manufacturing facilities later moved to Uttarpara, West Bengal in 1948, where it began the production of the Morris-designed Hindustan Ambassador.

In 1948, after independence, vehicle production was shifted to a new greenfield plant spread over a large area in Uttarpara, West Bengal.

In 1994, GM and Hindustan (C K Birla) formed a 50-50 joint venture, General Motors India to manufacture Opel Astra cars in the newly created mid-segment category.

[7] Hindustan motors used to make earthmovers, initially in collaboration with Terex (US) and Fermac (UK); and beginning in 1984 with Caterpillar Inc. at the HMEED plants in Thiruvallur, near Chennai and Puducherry.

HML continue to be a joint venture partner with Caterpillar in Hindustan Power Plus, which manufactures diesel engines and generator sets.

They were well known for their reliability and fuel consumption, but were discontinued mainly due to falling sales, poor service facilities, and HML not being able to sell them for an affordable price.

In India, Mitsubishi offered the Pajero, Lancer and Outlander with mild refreshes until early 2010s, but as time went by, their sales trended down.