Commercial vehicle maker Eicher Motors on Monday reported a 33.34 per cent increase in its consolidated profit after tax at Rs 163.4 crore for the quarter ended March 31. The company had posted a profit after tax of Rs 122.57 crore in the same period last year, the company said in a statement. The consolidated total income from operations during the quarter also went up by 21.7 per cent to Rs 1,695.04 crore from Rs 1,392.7 crore.