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Therefore, understanding vehicle pollution requires knowledge of both primary emissions, and how these emissions age in the atmosphere. We provide a systematic examination of carbonaceous PM emissions and parameterisation of SOA formation from modern diesel and gasoline cars at different temperatures (22, \u22127\u2009\u00b0C) during controlled laboratory experiments. Carbonaceous PM emission and SOA formation is markedly higher from gasoline than diesel particle filter (DPF) and catalyst-equipped diesel cars, more so at \u22127\u2009\u00b0C, contrasting with nitrogen oxides (NO<jats:sub>X<\/jats:sub>). Higher SOA formation from gasoline cars and primary emission reductions for diesels implies gasoline cars will increasingly dominate vehicular total carbonaceous PM, though older non-DPF-equipped diesels will continue to dominate the primary fraction for some time. Supported by state-of-the-art source apportionment of ambient fossil fuel derived PM, our results show that whether gasoline or diesel cars are more polluting depends on the pollutant in question, i.e. that diesel cars are not necessarily worse polluters than gasoline cars.<\/jats:p>","DOI":"10.1038\/s41598-017-03714-9","type":"journal-article","created":{"date-parts":[[2017,7,3]],"date-time":"2017-07-03T15:46:00Z","timestamp":1499096760000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":174,"title":["Gasoline cars produce more carbonaceous particulate matter than modern filter-equipped diesel cars"],"prefix":"10.1038","volume":"7","author":[{"given":"S. M.","family":"Platt","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"I.","family":"El Haddad","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"S. 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