Toyota Motor Corp is betting on pricier premium models offering better safety and quality.
Ola competes with Uber Technologies in India.
E-commerce in India could grow to $137 billion by 2020 from $11 billion in 2013, says Morgan Stanley, and firms like Amazon, local market leader Flipkart and rival Snapdeal, backed by Japan's SoftBank, are fighting for a bigger share.
This would impact Vento, Jetta and Passat sedan cars, Polo hatchback and Polo Cross crossover in India.
Maruti's exports are limited and mainly to countries in Africa and Latin America.
IndiGo was set up in 2006 by businessman Rahul Bhatia and Rakesh Gangwal, a former CEO for US Airways Group.
The government said in a statement earlier this year that by April 1, 2017 cars sold in all Indian cities will need to meet the Bharat Stage IV norms.
Volkswagen sold about 45,000 cars in India in the year to end-March, of which about two-thirds were Polo hatchbacks
Coffee Day Enterprises Ltd is backed by KKR & Co.
Nissan and Renault say they will compete with new models, especially small cars, and by growing their dealer network.
Ford to launch new compact car Figo Aspire in India
An estimated $344 billion has been illegally removed from the Indian economy between 2002 and 2011
The automaker was found to have engaged in anti-competitive practices.
GM India has asked customers facing problems with their remote keyless entry accessory to go to their Chevrolet dealer.
Tata Motors Quarteryl profit down 56 per cent on higher input cost
Car makers are trying hard to boost sales in India.
Subrata Roy has been held in jail for more than a year.
Foreign money has been pouring into India's fast-growing e-commerce sector, with investors ranging from Japan's Softbank Corp to Singapore's Temasek Holdings.
General Motors aims to grab at least 5 per cent market share in India within the next decade.
India is the world's third-largest smartphone market.