As of the Euro 6c emissions rules, gasoline engines are subject to the same particulate count limits as diesel engines. This has resulted in the addition of par

As of the Euro 6c emissions rules, gasoline engines are subject to the same particulate count limits as diesel engines. This has resulted in the addition of particulate filters to certain 2018 model petrol vehicles (BMW, VW) in Europe. This suggests that prior to Euro 6c, some petrol engines were getting away with higher particulate emissions than would have been allowed for diesels.