New Delhi, July 29 -- Shares of Maruti Suzuki India Ltd have plunged this year, slammed by worries about future growth at India's largest carmaker amid changing government rules, especially on electric vehicles, intensifying competition and a demand squeeze.

Maruti's domestic vehicle sales have fallen more than 19% to 374,481 units in the June quarter, the sharpest drop since the third quarter of 2000-01. This has taken a toll on its financials as well as stock performance.

In 2019, the stock has fallen 25.5%, widely underperforming a 4.49% rise in the Sensex. It also fared poorly last year, falling 23.3% compared with the benchmark Sensex's 5.91% gain.

"Demand for mass market passenger cars is unlikely to improve in the near future and ...