Joachim Low's men hugely impressed in the semifinals with a 7-1 win over Brazil, while Argentina needed penalties to see off Netherlands in their final-four encounter.
Nevertheless, Maradona believes the semifinal results could prove to be beneficial for Alejandro Sabella's side as he thinks Germany could get complacent.
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"The match against Germany will not be a mission impossible. It is not impossible to beat them," Maradona said during his show on Telesur. "The German egos will be enlarged by the 7-1 win over Brazil. Their overconfidence could be a good thing for Argentina."
The Argentina icon then went on to praise Javier Mascherano following his sublime performance against Holland on Wednesday - a showing he believes was vital given that Lionel Messi seemed "a bit tired".
"Argentina against Netherlands were Mascherano and 10 more players. He was like a pit bull out there on the pitch," Maradona added. "Messi was not at the level we have come to expect from him against Holland. I think that he felt a bit tired."