The Dortmund midfielder insists he and his team-mates must replicate their club form on the international stage if they are to reach Brazil in 2014
Abdullah Avci's side are currently four points behind Tuesday's opponents Hungary in Group D, with a stuttering 2-0 win over minnows Andorra doing little to appease disgruntled supporters.
And the Borussia Dortmund midfielder concedes that the Euro 2008 semi-finalists are unlikely to take part in next summer's finals unless they begin to replicate their club form on the international stage.
"It's totally our fault. Some of us are performing at our club, but not with the national team. Maybe I am on this list too," he told Milliyet.
"If we can't qualify for World Cup in Brazil, we really need to think about it. Right now, our situation is in the hands of other teams. We should have got better results in our earlier games."
Some reports have claimed that their is a split in the squad between players who were brought up in Turkey and those raised in Germany and the rest of Europe.
But Sahin, who was born in Ludenscheid, Germany, refuted these comments and explained that there are no issues within the camp.
"There is no separation in the team. Arda Turan and Mehmet Topal are my best friends and they weren't raised in Germany. These kind of rumours are rubbish," he added.