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What diesel vehicles are exempt from emissions testing in the new program?

April 26, 2017diesel emissions exempt program Testing vehicles

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What diesel vehicles are exempt from emissions testing in the new program?

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Light-duty 1997 model year and newer vehicles equipped with diesel engines and onboard diagnostics (OBD) will now be required to be OBD tested. Model year1996 and older or newer diesels without OBD will be exempt from emissions testing. Heavy duty diesels (10,000 pounds+) will continue to receive opacity tests starting in April 2009.