DaimlerChrysler this month begins production of Chrysler Sebring and Dodge Stratus saloons meeting California’s stringent clean air standards, claiming they will be among the cleanest-running internal combustion-powered vehicles in the world.

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All versions with the petrol-fuelled, in-line 2.4-litre four cylinder engine and sold in California, New York, Massachusetts, Vermont and Maine will be certified to meet California’s Partial Zero Emission Vehicle (PZEV) standard. Tailpipe emissions have been reduced to near zero levels, with emissions of hydrocarbons (HC) reduced 89% compared with the previous model and oxides of nitrogen (NOx) reduced 93%. HC and NOx are the two primary components of smog.


To be certified as PZEVs, vehicles must meet stringent emission standards established under California clean air rules. Tailpipe emissions meeting the Super Low Emission Vehicle (SULEV) standard must have zero evaporative emissions from the fuel tank and fuel system and emission control equipment guaranteed for 15 years or 150,000 miles.