The Oregon Department of Environmental Quality's Vehicle Inspection Program plays a vital role in protecting air quality across the state. Each year, DEQ submits a detailed report to the U.S. Environmental Protection Agency as part of Oregon's State Implementation Plan Under the Clean Air Act. This report includes data on vehicle emissions testing, program performance, enforcement efforts, and environmental outcomes.
The most recent report, covering the 2024 calendar year, is available below. It highlights how emissions testing continues to reduce harmful pollutants, support cleaner vehicles and ensure compliance with federal air quality standards in Oregon's testing areas.