Amid declining demand, the country`s largest car-maker, Maruti Suzuki India (MSI) has enhanced its market share in the April-July period this fiscal to over 40 per cent in the passenger vehicle segment. While rival Hyundai Motor India Ltd (HMIL) managed to increase market share to 15.25 per cent, homegrown majors Mahindra ~~amp; Mahindra (M~~amp;M) and Tata Motors struggled during the period. According to data from the Society of Indian Automobile Manufacturers (SIAM), MSI accounted for 3,20,491 of the 7,93,708 passenger vehicles sold in the domestic market in April-July. Back in 2012, the company`s market share was 38.96 per cent, with 3,34,288 of the 8,57,977 units sold. HMIL sold 1,21,080 units in the April-July period. In the year 2012, the company had a market share of 14.58 per cent with 1,25,115 units. According to the SIAM data, M~~amp;M`s market share during the period fell marginally to 10.82 per cent at 85,924 units. In the corresponding period last fiscal, the company had a market share of 10.94 per cent with 93,930 units.