"Going forward, we will see higher growth rates in the luxury segment than we see in the mass market," he said, adding that buyers' average age had also fallen below 40, from more than 45 earlier.
Global automakers' biggest growth hurdle, however, is a shortage of semiconductors and logistics woes worsened by Russia's invasion of Ukraine. For Mercedes India, this has led to an order backlog of 4,000 cars, Schwenk said.
India's startup frenzy and stock market boom are creating a new breed of wealthy people who splurg on luxury brands such as Rolex, Louis Vuitton and Gucci, the 2021 Hurun India Wealth Report showed.
The number of Indian households with a net worth of at least a million dollars grew 11 percent in 2021 to 458,000 and is expected to increase by 30 percent over the next five years, the report said.
India is largely a small, low-cost car market in which luxury models account for just over 1 percent of total annual sales of about 3 million.
Mercedes is the top-selling luxury brand, with a market share of more than 40 percent, says JATO Dynamics, and it competes with Audi, BMW and Tata Motors' Jaguar Land Rover.
Mercedes' India sales rose more than 40 percent to 11,242 cars in 2021, coming off a low of 7,893 during the pandemic-hit year of 2020.
But Mercedes saw growth of 80 percent in top-end models such as the GLS, S-Class and GLS Maybach, all cars costing more than 10 million rupees ($131,337).
Schwenk said while the pandemic had driven some of this demand, as more people "spent for their own pleasure," India's luxury car market showed potential for higher growth, a feature missing over the last six to eight years.
To capitalize on the momentum, the company plans to launch 10 models in 2022, including its locally assembled EQS electric sedan.
While growth in India's luxury and mass markets are not directly comparable, Mercedes' high-end models doing well reflects the wealth of the nation, said Ravi Bhatia, president for India at JATO.
"The rich have become richer and some of them have ended up upgrading their lifestyle," Bhatia said.
JATO's analysis also showed that Mercedes' product mix and pricing led to a lower average weighted price of its cars, putting upgrades to the luxury segment within reach of more customers, he added.
Mercedes' sales in 2021, however, are still lower than its peak of more than 15,500 cars in 2018. Schwenk said sales could approach 2018 levels this year if there were no further supply chain disruptions because of COVID or geopolitical issues.
Lowering Indian taxes on luxury cars, which he said were among the highest in the world, would also help grow the segment and benefit the car market.