4) Bayern 2013:

Under the management of veteran German manager Jupp Heynckes, the Bayern batch of 2013 was one of the most compact teams of this century.
Bayern thumped a heavily built Barcelona 7-0 on aggregate in the semi-finals and went on to beat a well drilled Borussia Dortmund side 2-1 in the final.
Back then, Bayern Munich was almost unplayable. They had the pace of Robben and Ribery in the wings while the stability that Schweinsteiger and Javi Martínez provided in the midfield was immense. The guidance and leadership quality of Philipp Lahm was also a key factor in Bayern’s success.
It was Bayern’s 5th European title and their third final in four years. This was also the first time in history that the final was contested between two German teams.
In that season Bayern ended up claiming the treble, winning the Bundesliga, the UEFA Champions League and the DFB-Pokal. They also became the first German side to lift these three titles in history and third European club after Manchester United and Barcelona to achieve this phenomenal f. Bayern broke or equalled around 30 records in that season.