The feat has been achieved in a little over seven years after the company hit the 10 mln (1 cr) milestone.
The carmaker is the only one in India to achieve the feat, even though two-wheeler makers have achieved the milestone before this.
Maruti Suzuki has two factories, at Gurugram and nearby Manesar.
Of the 20 million units, 14.37 million vehicles are manufactured in Gurugram, while 5. 62 million vehicles are from the Manesar facility.
Besides the above, Maruti’s parent Suzuki also runs a fully owned plant in Gujarat, whose output is sold by Maruti Suzuki.
The company started producing cars in India in December 1983, largely because of the efforts of Indira Gandhi’s son Sanjay Gandhi who wanted India to have its own ‘people’s car’.
“For over three decades, Maruti Suzuki has worked to listen and meet the evolving customer aspirations with contemporary products of global quality,” said Kenichi Ayukawa, MD & CEO, Maruti Suzuki India.
Maruti Suzuki had achieved the 1 million production in March 1994, nearly after a decade after start of manufacturing cars. The 5 million milestone was achieved in April 2005.
The company said it makes 16 models for domestic market, including popular models like Swift, Dzire and Vitara Brezza — which contribute over half the total sales.
Vehicles made in India are also exported to more than 100 countries, including those in Europe, Japan, Asia, Africa and Latin America.