The model, which is the country's top selling brand for over 10 years in a row, took 15 years and six months to break 30 lakh sales mark.

"Since its launch, Alto has found favour with customers as an affordable car with good design, performance and high fuel efficiency. Customers, especially at the entry-level, have valued Alto as a win-win package of style and affordability," MSI said in a statement.

The company has also exported over 3.8 lakh Alto cars to over 70 countries with Sri Lanka, Algeria, Chile, the UK and the Netherlands being top overseas markets.

MSI Executive Director Marketing & Sales RS Kalsi said Alto has constantly evolved to reflect the changing India.

"Over the years, Maruti Suzuki has kept the brand rejuvenated with latest technology, features and design. Alto is being offered with features – airbag and Auto Gear Shift – at par with higher segment cars. These initiatives have helped enhance the brand's connect with its customers and maintain its popularity," he added.

The company had first launched the model in September 2000. It took it over three years to cross one lakh cumulative sales mark. In November 2008, the model breached the 10 lakh sales mark followed by 20 lakh milestone in April 2012.