BERLIN -- The German city of Stuttgart, home to Mercedes-Benz and Porsche, will ban Euro 4 diesel vehicles starting April 1.
The ban will include car owners who live in the city.
Stuttgart said it would ban vehicles with engines conforming to the Euro 4 emissions standard from driving or parking in the city unless they are given an exception.
Vehicles with engines conforming to the Euro 5 emissions standard will not be affected at the moment but a decision on whether to ban will be made after examining emissions results in mid-2019, the city said.
The ban follows a ruling in response to the city's attempt last year to overturn an earlier decision seeking to ban some diesel vehicles from its city center.
Germany's highest administrative court ruled in February last year that banning diesel passenger cars is legally permissible in cities.
Diesel bans have now been allowed in German cities including Frankfurt, Hamburg, and Berlin, following the ruling.