Filtered car emissions still turn toxic after sunlight exposure, study reveals

Filtered car emissions still turn toxic after sunlight exposure, study reveals

A new international study led by Helmholtz Munich and the University of Rostock reveals that emissions from modern gasoline cars—despite meeting the currently strictest European emission standards EURO 6d—can become significantly more harmful after being released into the atmosphere. The findings, published in Science Advances, challenge the assumption that filtered exhaust from EURO 6d-compliant vehicles is inherently safe.