Maruti may operate just one shift at factories.
Automakers, parts manufacturers and dealers have laid off about 350,000 workers since April.
Vehicle sales in all segments have continued to plummet for the last several months.
Last month, PV sales fell 17.54 per cent to 2,25,732 units, down from 2,73,748 units the automobile sold in the year-ago period.
SIAM said the role of NBFCs is important in vehicle sales as they cater to customers mainly in semi-urban and rural areas.