MUNICH: Robert Lewandowski's hat-trick helped give coach Carlo Ancelotti a flying start to his first Bundesliga campaign as Bayern Munich cruised to an easy 6-0 win over a lacklustre Werder Bremen at the Allianz Arena on Friday.

The champions went ahead with a stunning ninth-minute volley from Xabi Alonso before Poland striker Lewandowski opened his account four minutes later from a Franck Ribery through ball.

Lewandowski then effectively put the game beyond Werder's reach one minute into the second half.

Captain Philipp Lahm and Ribery made it 5-0 before Lewandowski completed his treble with a 77th-minute penalty, his second hat-trick of the season after he also notched one in the German Cup last week.