"We made Azerbaijan look two classes better than they are," he told RTL. "We were a little bit arrogant - I don't think that's good.
"That made the game much more difficult than it needed to be."
Although Germany emerged comfortable winners, Azerbaijan gave them a shock when Dimitrij Nazarov found the net to make it 1-1 with half an hour played.
However, the Germans' record of five wins out of five with a goal difference of +19 makes this their best ever start to a World Cup qualifying campaign.