The DFB chief has major doubts as to whether any European nation can win the tournament in Brazil next summer as South American sides historically dominate their own continent
The Fifa tournament has been held in the continent four times since its first iteration - 1930, 1950, 1962 and 1978 - and on each occasion either Uruguay, Brazil or Argentina have conquered.
The World Cup is returning to South America next year for the first time in 36 years, and the DFB team manager is extremely doubtful that his nation will reclaim the title they have not won since West Germany secured victory in 1990.
"For us, it is almost impossible to win the tournament," Bierhoff said in a press conference ahead of the nation's clash with Kazakhstan on Tuesday night.
"It is a really big mountain [to climb]. The South American sides are usually more advanced [in their own continent]."
However Bierhoff is confident that Joachim Low's side have enough nous to progress in their World Cup qualification group, though he dismissed suggestions the FA are planning logistics for next summer's tournament already.
"We are not planning where we will stay in Brazil because we do not know which group we will play in," Bierhoff continued. "But it would not be in the extreme north or south of Brazil."
The Euro 1996 champions currently top Group C on 13 points, five points ahead of second-place Sweden.
The only nation to have a guaranteed place in the 2014 finals are hosts Brazil, but other nations will start securing spots in the latter half of 2013.
Uefa has 13 places up for grabs, with each group winner qualifying for next summer's tournament and the eight best runners-up competing for four play-off chances to play in South America.
Spain became the first European nation to win the World Cup outside of the continent three years ago, but are at risk of missing automatic qualification if they lose to France on Tuesday night.