Portland Drivers Skip Tests as Oregon Updates Car Emissions Rules
Published Date: 4/2/2026
Rule
Summary
Oregon’s Vehicle Inspection Program is getting a fresh update approved by the EPA, mainly affecting drivers in Portland and Medford. Newer vehicles will be exempt from certain emissions tests until a set date, making inspections smoother. These changes kick in on May 4, 2026, helping keep the air clean without adding extra costs or hassles.
Analyzed Economic Effects
1 provisions identified: 1 benefits, 0 costs, 0 mixed.
New-vehicle OBD Test Exemption
If you drive in the Portland or Medford areas, newer vehicles are exempt from on-board diagnostic (OBD) test requirements under OAR 340-256-0355 until January 1 of the calendar year that is four years after the vehicle's designated model year. The Oregon rule revisions became State effective January 10, 2025 and the EPA approval is effective May 4, 2026.
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