Sales and registrations of Mercedes-Benz’s new Vito vans and Porsche’s Macan and Cayenne SUV’s which possesses diesel engines have been stopped by the Swiss authorities for disguising emission levels, the Astra roads agency said on Wednesday.

The move which will be effective from August 17 will let the existing vehicles to operate. However, must be retrofitted.

The affected variant of cars includes the Mercedes Vito with 1.6-litre engines, Porsche Macan with 3.0-litre engines and Cayenne with 4.2-litre engines.

Earlier, in June, Daimler had recalled over 7,44,000 of its cars over violation of emission norms in Europe

Astra roads agency reports that Daimler had earlier stopped the export of Vita after German authorities had issued a recall and had asked to stop the registration of vehicles. This had affected 24 vehicles that were supposed to be exported to Switzerland.

Earlier, in June, Daimler had recalled over 7,44,000 of its cars over violation of emission norms in Europe. According to Germany’s Federal Transport Authority, the car had an underlying, unauthorized code that could be used to manipulate diesel exhaust emissions.

The affected variant of cars includes the Mercedes Vito with 1.6-litre engines, Porsche Macan with 3.0-litre engines and Cayenne with 4.2-litre engines.

The authority issued a recall notice for the company which included 2,38,000 German cars. However, Mercedes-Benz put across a mandatory notice recalling 7,44,000 cars from all of Europe. The transport authority in an official statement said that they had asked the company to recall selected Vito, C-class and GLC models in Germany.

In June, Mercedes defended its diesel engine software, saying it conformed to the law prescribed by the EU and that in certain situations, car-makers were permitted to switch off the SCR filter in diesel engines in the interests of engine longevity.