Franck Ribery, Thomas Muller and Mario Gotze were among the scorers as the reigning European and German champions put on a show at the Weserstadion
Ahead of second-placed Bayer Leverkusen's 1-0 win at the injury-ravaged Borussia Dortmund, Pep Guardiola's side showed just How destructive they can be as they added another victory to their so-far-unbeaten league campaign.
An own goal from unfortunate Bremen player Assani Lukimya opened the scoring with 21 minutes gone before the Bavarians' Daniel Van Buyten doubled the lead shortly afterwards.
Franck Ribery announced his return from injury by making it 3-0 with half-time looming as die Roten's flurry of strikes continued.
The Frenchman added another with eight minutes to go in the game, with Bayern attackers Mario Mandzukic and Thomas Muller striking between his first and second.
Summer signing Mario Gotze added the extra gloss on to the scoreline with a close-range finish at the Weserstadion that left away fans jubilant while Bremen fans were wondering how on earth this side could have been stopped.