Tata Motors has auto manufacturing and vehicle plants in Jamshedpur, Pantnagar, Lucknow, Sanand, Dharwad, and Pune in India, as well as in Argentina, South Africa, the United Kingdom, and Thailand.

It has research and development centers in Pune, Jamshedpur, Lucknow, Dharwad, India and South Korea, the United Kingdom, and Spain.

[10] By November 1954 Tata and Daimler manufactured their first goods carrier chassis at their Jamshedpur plant with 90-100 hp and capacity of 3-5 tons.

"[13][14] In the 2000s, Tata Motors made a series of acquisitions and partnerships, acquiring Daewoo's South Korea-based truck manufacturing unit,[15] a joint venture with the Brazil-based Marcopolo, Tata Marcopolo Bus,[16] Jaguar Land Rover.,[17][18][19][20] Hispano Carrocera,[21] and an 80% stake in the Italian design and engineering company Trilix.

[22] On 12 October 2021, private equity firm TPG invested $1 billion in Tata Motors' electric vehicle subsidiary.

[24] The company's manufacturing base in India is spread across Jamshedpur (Jharkhand), Pune (Maharashtra), Lucknow (Uttar Pradesh), Pantnagar (Uttarakhand), Dharwad (Karnataka) and Sanand (Gujarat).

[27] Tata is present in many countries, it has managed to create a large consumer base in the Indian subcontinent, namely India, Bangladesh, Bhutan, Sri Lanka and Nepal.

Tata is also present in Italy,[28] Spain,[29] Poland,[30] Romania,[31] Turkey,[32] Chile,[33] South Africa,[34] Oman, Kuwait, Qatar, Saudi Arabia, United Arab Emirates, Bahrain, Iraq, Syria and Australia.

The principal reasons behind the acquisition were to reduce Tata's dependence on the Indian commercial vehicle market (which was responsible for around 94% of its sales in the MHCV segment and around 84% in the light commercial vehicle segment) and expand its product portfolio by leveraging on Daewoo's strengths in the heavy-tonnage sector.

[37][38] TML Drivelines Ltd. is a wholly owned subsidiary of Tata Motors engaged in the manufacture of gearboxes and axles for heavy and medium commercial vehicles.

In 2017, TAL, a subsidiary of Tata Motors, manufactured India's first industrial articulated robot for micro, small, and medium enterprises.

The company manufactures and assembles fully built buses and coaches targeted at developing mass rapid transportation systems.

It uses technology and expertise in chassis and aggregates from Tata Motors, and know-how in processes and systems for bodybuilding and bus body design from Marcopolo.

[43] The deal allowed Tata Motors to continue using the ‘Marcopolo’ trademark for a minimum of three years with a non-compete provision in India for a corresponding period.

[44] Its principal activity is the development, manufacture and sale of Jaguar luxury and sports cars and Land Rover premium four-wheel-drive vehicles.

The editors cited "electronics, drive system, power equipment, noises and leaks" as problematic aspects.

[46] The Jaguar Land Rover subsidiary was struggling by 2019 and Tata Motors wrote down its investment in JLR by $3.9 billion.

[47] In July 2023, Tata announced its plans to invest £4 billion to build an electric car battery factory in the UK, which will be one of the largest of its kind in Europe.

Tata Motors has gained access to Fiat's diesel engine and transmission technology through the joint venture.

In 2008 Tata Motors' UK subsidiary, Tata Motors European Technical Centre, bought a 50.3% holding in electric vehicle technology firm Miljøbil Grenland/Innovasjon of Norway for US$1.93 million, and planned to launch the electric Indica hatchback in Europe the following year.

[59][60][61] In September 2010, Tata Motors presented four CNG–Electric Hybrid low-floored Starbuses to the Delhi Transport Corporation, to be used during the 2010 Commonwealth Games.

In December 2019, Tata Motors unveiled the Nexon EV, an SUV with a 30.2KWh lithium-ion battery and a consistent range of 312 km on a single charge.

The minitruck was a huge success in India with auto analysts claiming that Ace had changed the dynamics of the light commercial vehicle (LCV) market in the country by creating a new market segment termed the small commercial vehicle segment.

By October 2005, LCV sales of Tata Motors had grown by 36.6% to 28,537 units due to the rising demand for Ace.

[72] Ace has also been exported to several Asian, European, South American, and African countries and all-electric models are sold through Polaris Industries' Global Electric Motorcars division.

The 407 model range includes trucks, tippers, pick-ups and vehicles for agri/food products, construction, light mining and services.

[80] In March 2024, Tata Motors announced plans to undergo a significant restructuring by splitting into two separate listed entities.

The demerger is expected to allow each entity to pursue tailored growth strategies and attract specific investor bases.