HB 2007 (2019) established deadlines, after which certain older model diesel engine vehicles cannot be titled or registered in Clackamas, Multnomah and Washington Counties. The first phase is effective Jan. 1, 2023, and includes vehicles equipped with a 1996 or older diesel engine.
Medium- and heavy-duty vehicles with a 1996 or older diesel engine may continue to renew vehicle registration if they participate in the DEQ Retrofit Compliance Program and meet DEQ-approved retrofit requirements.
Please visit DEQ's Diesel Retrofit Compliance Program website for information and program requirements. Act now to find out if your vehicle is eligible for a DEQ-approved retrofit by reviewing the program requirements and consulting with a manufacturer-approved installer.
In addition, DEQ offers annual Diesel Emissions Mitigation Grants to address emissions from a wide array of diesel equipment operating in Oregon. The 2022 grant application process will open in April and owners of qualified medium- and heavy-duty trucks are invited to apply for funding to support the installation of diesel particulate filters.
For questions about vehicle registration renewal or exemptions of medium-duty vehicles, contact the Oregon Driver and Motor Vehicle Division at 503-945-5000. For questions about heavy-duty vehicle registration renewal or exemptions of heavy-duty vehicles, email the Oregon Department of Commerce and Compliance at CCDHB2007Inquiries@odot.state.or.us or call 503-378-6699.