automobile emissions
Vehicle pollution byproduct
Automobile emissions are the gases and particles released by motor vehicles, primarily from exhaust but also from fuel evaporation and brake dust.
The term usually refers to pollutants—carbon monoxide, nitrogen oxides, and particulate matter—or greenhouse gases like carbon dioxide.
California has the strictest automobile emissions standards in the country.
Regulations typically require periodic emissions testing for vehicle registration.
- carbon dioxideRespiration byproduct, photosynthesis fuel
- internal combustion engineHeat-driven mechanical powerplant
- greenhouse effectAtmospheric heat retention mechanism
- air pollutionToxic atmospheric contamination
- biofuelsFuel from living matter
nitrogen oxides · diesel engines · diesel fumes · benzene · sulfur dioxide · methane · gasoline engines · gas guzzler · fuel economy · catalytic converters · hydrocarbons · lead · acid rain · exhaust systems · check engine light · respiratory diseases · incomplete combustion · particulate matter
automobile emissionsclean air
Uncontaminated breathable gas
carbon sequestration · air purification · photosynthesis · carbon capture
automobile emissionszero emissions
No pollutants produced
clean energy · sustainable transport · green transportation · clean air · walking
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