Maruti Suzuki Ltd, India's largest car maker said higher margins from sales of its Ertiga SUV and Swift Dzire sedan helped it double profits during the three months to December. It also cut costs. The company said it sold 27% more cars from October to December due to the launch of its new small car Maruti Alto 800. This is the first substantial increase in profits in one and half years for Maruti. Profits were Rs 501 crore as against Rs 205 crore during the same period in 2011. Sales for the quarter stood at Rs 10,960 crore.While domestic vehicle sales were reported at 2.6 lakh units, exports stood at 32,496 units. Sales volume stood at 3,01,453 units during the quarter as compared to 2,39,528 units in the corresponding period of previous year, it said in a statement.