Mahrez's goals either side of half-time secured a 2-0 victory after his free kick last week earned City a 2-1 win in Paris against last season's beaten finalists, DPA reports.
In the second-leg semi-final, City outclassed PSG 2-0 and as a result, they won the fixture 4-1 on aggregate. In the first-leg semi-final between both these sides, city">Manchester City had emerged triumphant after defeating PSG 2-1.
With this win, City has further strengthened its position at the top of the standings with 68 points from 29 matches. The side is now 14 points ahead of the second-placed Manchester United.