Daimler is accused of installing so-called "Defeat device software" in thousands of its SUV vehicles in a survey launched by the German Federal Motoring Authority, Bild Am Sonntag reported on Sunday.
The Stuttgart-based automobile manufacturer has been reported to have installed emission failure software of 60,000 of its Mercedes-Benz-branded GLK 220 CDI SUV vehicles built between 2012 and 2015. The vehicles will all meet the Euro 5 emission standard.  A Daimler spokesman said the company was fully cooperating with the authorities, and that any "claim that we wanted to hide something" is false.
Last year, Daimler's CEO Dieter Zetsche was summoned to a meeting of the Transport Department in Berlin after it appeared c Ompany had wondered about emissions into thousands of Mercedes Vito models.
In the 2015 Dieselgate scandal, the US authorities accused Volkswagen of installing software defeat equipment in around 11 million diesel engines sold worldwide. The claims have since spread to other auto giants such as Daimler, Renault and Fiat.
This story has been updated with a reaction from Daimler.