The converter would be fitted to cars with the first generation of the EA 189 diesel engine, the paper reported today, without providing information on its sources.
A source familiar with the matter told Reuters that the proposal for a technical solution Volkswagen (VW) has drawn up includes a new catalytic converter system made in part from new materials.
Volkswagen has struggled to agree with US authorities on a fix for vehicles fitted with the emissions test cheating devices, Reuters reported this week, showing how relations between the two sides remained strained four months after the scandal broke.
The fix would need to be approved by the US Environmental Protection Authority, and Volkswagen CEO Matthias Mueller hopes to convince EPA officials at a meeting on Wednesday in Washington, Bild am Sonntag further added.
Volkswagen declined to comment on the report.