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Mufflers and Tailpipes
Oxygen Sensors
Environmental Issues

What comes out of a car's exhaust pipe?


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February 23, 2008 8:42AM

* Carbon Monoxide * Nitrogen dioxide * Sulphur dioxide * Suspended particles including PM-10, particles less than 10 microns in size. * Benzene * Formaldehyde * Polycyclic hydrocarbons *Courtesy of

These components generally compose less than 10%. I am trying to discover what the proportions are of the remaining which include Nitrogen, Water Vapour, Carbon Dioxide.