Robert Lewandowski, right, celebrates Bayern Munich's second goal with teammate David Alaba on Saturday. Photo: Michael Probst/AP

BERLIN – Robert Lewandowski scored one goal and set up another as champions Bayern Munich mauled VfB Stuttgart 3-0 on Saturday to maintain their perfect start to the Bundesliga season.

VfL Wolfsburg, who narrowly escaped relegation last season, joined them on six points after coming from a goal down to cruise past hosts Bayer Leverkusen 3-1 with their second upset in two matches.

Bayern were in complete control, and should have scored long before Leon Goretzka fired in for the lead in the 37th minute.

Last season’s Bundesliga top scorer Lewandowski added another in the 62nd with a fine low shot after Bayern hit the woodwork through David Alaba in a one-sided encounter.

The Poland forward then turned provider, sending Thomas Mueller through with a well-timed back-heel flick for their third goal in the 76th to put the game beyond Stuttgart.

Wolfsburg, who stunned last season’s runners-up Schalke 04 2-1 on the first matchday last week, scored three times after Leon Bailey’s lead for Leverkusen.

Keeper Ramazan Ozcan slapped the ball into his own net for an own goal in the 36th minute, Wout Weghorst headed in after 55 minutes and Renato Steffen fired in a third on the hour for Wolfsburg, who had survived a relegation playoff last season to stay in the Bundesliga after finishing 16th.

Champions League club Hoffenheim bounced back from their opening loss to Bayern and beat Freiburg 3-1, courtesy of forward Adam Szalai’s second-half double and Andrej Kramaric’s stoppage-time goal.

Schalke host Hertha Berlin on Sunday.