Robert Lewandowski, Jamal Musiala and Leroy Sane handed Bayern a comfortable lead before half time, and after Lazio’s Francesco Acerbi’s own goal early in the second half, Joaquin Correa’s consolation goal was little more than a footnote.
The 4-1 lead was worthy of a dominant display from the world club champions in Rome, and they are in control of the Last 16 tie ahead of the second leg on March 17.
Blistering start from Bayern
And the visitors drew first blood inside nine minutes. Lewandowski latched onto a stray pass from Mateo Musacchio, rounded keeper Pepe Reina and tapped in.
It was the Pole’s 72nd goal in the competition, moving clear of Raul to become the outright third top-scorer in the history of the Champions League after Cristiano Ronaldo and Lionel Messi.
Joshua Kimmich had an effort from a good position blocked by the home defence, before Lazio’s Patric Gabarron fired wide at the other end – although the linesman’s flag went up for offside anyway.
Munich were controlling the pace and tempo of the first leg tie at the Stadio Olympico, and soon doubled their advantage 23 minutes in.
And it was a moment to saviour for Musiala, who celebrated his first Champions League goal. Leon Goretzka played a neat ball through to the German starlet, who made no mistake from 20 yards out, beating the diving Reina, three days before his 18th birthday.
But Munich weren’t done there. Kingsley Coman broke down the left hand side, cut inside past Manuel Lazzari and saw his low strike saved by Reina, but Sane was first to react to slot home from close range to put the visitors three goals up at half time.
Munich in command
When Acerbi put through his own net early in the second half, Lazio’s situation worsened but Correa pulled one back almost immediately, and that is how it remained.
Not that Hansi Flick’s team will be too troubled. This result sends a warning that the reigning champions are still the team to beat.