SIAM finds itself in a tangle, releases inaccurate data then revises it SIAM on Friday released inaccurate industry sales data for November with inflated numbers for Maruti Suzuki and later revised it Sumant Banerji | December 11, 2020 | Updated 21:55 IST SIAM collates and releases auto sales data every month KEY HIGHLIGHTS: SIAM revises it later to 4.65% The error due to inflated numbers of units attributed to Maruti Suzuki Maruti's over 50% market share led to a wild swing in industry figures Sales indicate festive cheer is wearing off. In October, growth was 14.2% Automotive industry body Society of Indian Automobile Manufacturers (SIAM) found itself in an embarrassing position on Friday when it had to revise industry sales data for November after it released inaccurate figures with inflated sales numbers for Maruti Suzuki, India's largest car maker.