The German carmaker Porsche says it will stop making diesel cars, and concentrate on petrol, electric and hybrid engines instead.
It follows a 2015 scandal in which its parent company, Volkswagen, admitted it had cheated emissions tests for diesel engines.
Diesel cars over a certain age have been banned in parts of some German cities in a bid to cut pollution.
The Porsche chief executive said the company was "not demonising diesel".
"It is and will remain an important propulsion technology," Oliver Blume said.
"We as a sports car manufacturer, however, for whom diesel has always played a secondary role, have come to the conclusion that we would like our future to be diesel-free.
"Petrol engines are well suited for sporty driving."