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End is near for mandatory vehicle-emissions testing With cleaner autos on road, program to end Dec. 31

Jan 31, 2019 - The Seattle Times

Nearly 40 years after Washington began checking vehicles' emissions, the program is slated to end Dec. 31 of this year.

As car technology has evolved and cleaner vehicles hit the road, Washington officials have been preparing for the expiration of the law establishing what had been mandatory testing in some of the most populous counties.

Starting in 2020, vehicle owners will no longer be required to have their vehicle's emissions tested before renewing their registration.