It's not just the auto industry, foreign investors in most industries in India face the same problem.
The challenge with the Indian market is although it offers great potential in theory, the government has a tendency to start soliciting money in all sorts of direct and indirect ways the moment they start seeing these companies make money. Unlike developing countries like Vietnam, China, Indonesia etc. that seek to balance between getting "benefits" and keeping the gravy train going, the Indians do it in a no holds barred and uncoordinated kill the golden goose manner.
There is no "best practice" under the table rules and chain of command in giving out goodies, you bribe a particular agency today only to have another guy from another department come to you for money the next day. You give a hygiene inspector money today he comes to you next week saying policies have changed and need yet more money to look the other way.
That is why many overseas MNCs operating in India appoint a top local Indian executive and empower him to choose the entire exco team as he likes, they have learnt through the hard way that only local Indians know how to navigate these greasy rules. After that they just turn one eye to anything he does as long as key financial metrices such as profitability and cashflow targets are met. Although it's not fool proof, the chances of success are higher.
Our GLCs took a lot of damage in India as well - SembCorp kept having issues with power purchase agreements, Singtel associate got fined billions of dollars for not very clear reasons, DBS forced to buy a dubious Indian bank...