Maruti Suzuki India on Saturday reported 3.4 per cent decline in total sales at 1,58,189 units in August. The company had sold 1,63,701 units in August last year, Maruti Suzuki India (MSI) said in a statement. Domestic sales were also down 2.8 per cent at 1,47,700 units last month as against 1,52,000 units in the year ago month, it added.