"The recall for Passats was planned for the ninth calendar week and to date our vehicles are still undergoing checks at the Federal Motor Transport Authority (KBA)," a VW spokesman told AFP, referring to a VW car model.
"The KBA is still not completely satisfied with some measures and requiring new information," said a spokesman, adding that it was hoping that the recall approval could come "in coming weeks".
Volkswagen was forced to recall vehicles around the world after it admitted it had installed so-called "defeat devices" aimed at cheating emissions tests into 11 million diesel engines worldwide.
In Europe alone, some 8.5 million vehicles are to due to be sent back to workshops.
Asked about his views on increasing clampdown on
diesel vehicles, Lauermann said businesses expect certainty and predictability in regulations and laws.
"You cannot shift business in one day or bring out new technologies every now and then. For businesses to succeed, you need stable and predictable laws and regulations," Lauermann told
