German sports car maker Porsche has announced on Saturday the withdrawal of about 900 cars in the world to the maintenance workshops because of potential problems in the safety belt. A spokesman for the company in Stuttgart, It might give problems with the seat belt. At a supplier, it had been a temporary production fault. When the retrieved sports car if they were vehicles of the current series. At the same time, he pointed out that the belt itself works well, but the company has recalled cars to replace the part that can result in the problem.