Nifty Auto Index is a sectoral stock market index that tracks the performance of India's automobile industry by comprising 15 actively traded and NSE-listed companies. One of the simplest ways to get exposure to the Nifty Auto Index is through index funds and ETFs.  Nifty Auto Index is a sectoral stock market index that tracks the performance of India's automobile industry by comprising 15 actively traded and NSE-listed companies. One of the simplest ways to get exposure to the Nifty Auto Index is through index funds and ETFs.  by Soban News (international And National News)