I worked for Jaguar Land Rover for 7 years. It almost never came up. I would say that most of the company operates independently. Occasionally we would engage with Tata's other arms (I recall early on doing work with TCS - Tata Consulting Services to do some software development.)
Sometimes as I'm out and about I'll see old Ford-era Jaguars and I'm pleased that the company has independence to make its own vehicles.
Interestingly, TCS (Tata Consultancy Services) which many people on HN would recognize, is a publicly traded company- yet something like 70% of it's shares are owned by Tata Group, and it's a massive part of their income.
> it's a massive part of their income
I'm pretty sure the income is massive, but it might not be where the majority of the money comes from.
Tata is a huge conglomerate with businesses that apparently have nothing to do with each other.
Steel, Salt, coffee/tea, hotel chains, multiple airlines, IT, car companies, watches, financial companies, phone companies (?), jewellery, air conditioners, the list goes on.
(Whether any of their products are good is a different matter; it may or may not be — I don't really know.)
Tata motors in India has been pretty good over the last few years. They now make very desirable products designed for the Indian market — ie., spacious, efficient, practical cars with good enough performance, reliability, high scores in GNCAP crash tests, at a price which a lot of Indians can afford.
Tata cars probably won't win any races, but they have finally figured out the pulse of the Indian market.
Sometimes as I'm out and about I'll see old Ford-era Jaguars and I'm pleased that the company has independence to make its own vehicles.