German exports fell in August for the second consecutive month.
The Federal Statistics Office said exports fell by 0.4% in the month, while imports were up by 0.9%.
Analysts are concerned that the recent strengthening of the euro against the dollar could harm the eurozone's economic growth.
Exports have been the main driver behind Germany's recovery from the economic downturn.
Its economy grew by 2.2% in the second quarter of the year, its fastest rate since reunification, but most observers do not expect that rate to continue for the rest of the year.