This is an excellent, MUST READ, research article published by Natixis.com. Check it out!
Let me cite the conclusion from the article:
Germany has switched from a pre-crisis model where growth was driven by exports and investment, after the polices aimed at boosting supply had provided the expected positive effects, to a post-crisis model where growth is driven by consumption and where real wages increase faster than labour productivity
Personally, I am amazed by the article. Most commentators, including this blog, are typically looking to Germany to reflate her economy faster to kick-start growth in Europe.