The company had 91 companies world wide in 2004 with objectives to get more. These companies deal with diverse functions such as Engineering, energy, consumable products chemicals as well as communication and information services. Of the whole group, Tata motors is rated as the biggest and has been ranked as fifth largest manufacturers of commercial vehicles worldwide.
As a part of the bigger bracket of the Tata Group Company, it started as Tata Engineering and Locomotive Company Limited (TELCO) at around 1920. TELCO was originally a company that was owned by the Peninsular Locomotive Company that came into existence in 1923. This company was taken by the East India Railways to ensure that it was used in, manufacturing passage carriers for the Indian railways. It was until 1945 when the Tata sons bought it from the government of India using it to manufacture steam boiler engine locomotives. They continued their manufacture under the TELCO name. Afterwards they joined with Marshals Sons from United Kingdom as they manufacture steam roads roller. They also worked together with Krauss Maffei from West Germany in the continuation of their steam engine locomotive manufactures.