"The 20 million production milestone is a testimony of trust in brand Maruti Suzuki," MSIL Managing Director & CEO Kenichi Ayukawa said.
Out of the 20 million units, 14.37 million vehicles were manufactured in Gurugram, while 5.62 million vehicles were from the Manesar facility, the company added.
The company had achieved the one million production in March 1994, nearly after a decade after start of manufacturing cars.
In April 2005, it reached the five million milestone, while the ten million mark was hit in March 2011.
"In the next seven years, the company achieved 20 million production milestone," MSIL said.
Currently, MSIL sells 16 models in the domestic market. It also exports to more than 100 countries, including markets like Europe, Japan, Asia, Africa and Latin America.
Earlier last month, the company's parent Suzuki Motor Corporation announced crossing accumulated automobile production of 20 million units in India through MSIL in which it holds 56.21 per cent stake and fully-owned arm, Suzuki Motor Gujarat (SMG) that supplies exclusively to MSIL.