The German Transport Department (KBA) found that some cars may be equipped with cadmium - contaminated parts, but which parts of the car or which auto maker has been affected. After the public suspected that toxic components could be used for electric vehicles (EV), the skeptical survey showed that a supplier to Volkswagen, Audi and Porsche has been contaminated with cadmium.            Such chargers have been installed in cars over the past six years, and most of the public, Audi and Porsche's pure electric vehicles and plug - in hybrid cars have been affected. Foreign media pointed out that the investigation may also trigger a recall event, affecting up to 124000 cars.        

The group said the suppliers did not tell them the specific content of the hazardous chemicals, and they found that each charger contained 0.008 grams of cadmium, and then reported to the German Ministry of transportation. The spokesman also said that the production and delivery of the affected vehicles had stopped immediately, and before the production continued, they had found alternative suppliers to replace the previous parts.           

Cadmium, a heavy metal thought to be carcinogenic and harmful to human organs, was banned from private cars three years ago. According to Volkswagen Group, there are no dangerous incidents caused by contaminated parts. Contaminated parts are sealed in several layers of enclosures, and when the vehicle is recycled or disassembled, problems may be found.