United have only lost more Champions League games against Barcelona (five) than they have against Bayern (four), though one of their two wins against them was in the 1999 final.
In the current format of the competition (since 2003-04), Bayern have reached the knockout rounds in all 19 of their appearances. They last failed to do so in 2002-03.
Bayern are unbeaten in their past 34 Champions League group games (W31 D3), and have won the past 13. Both are the longest such runs in the history of the competition.