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Vehicle and Engine Certification

Compliance Reporting for Heavy-Duty Commercial Trucks and Buses and Onroad Heavy-Duty Engines

Once you have received your certificate of conformity, follow these steps to submit required compliance reports.

STEP 1: Confirm that you have access to EV-CIS.

You must register with EPA to gain access to EV-CIS for the specific manufacturer code  for which you are seeking certification.
You must also set up an account with EPA to establish the necessary EV-CIS roles.

STEP 2: Update manufacturer information in EV-CIS.

To update information, users must have the "Maintain Manufacturer Information" role in EV-CIS. Otherwise, users will only be able to view  the information.

Information to Update

Updates include (but are not limited to):
  • Industry sector(s);
  • Addresses;
  • Contacts and Industry/Compliance Programs;
  • Test labs; and
  • Notification email addresses (used for EV-CIS' broadcast notifications).

STEP 3: Review all applicable regulations.

Regulations provide requirements for certification and compliance.


Review the following:
  • 40 CFR Part 85
    Control of air pollution from mobile sources.
  • 40 CFR Part 86
    Control of emissions from new and in-use highway vehicles and engines.
  • 40 CFR Part 1036
    Control of emissions from new and in-use heavy-duty highway engines.
  • 40 CFR Part 1037
    Control of emissions from new heavy-duty motor vehicles.
  • 40 CFR Part 1068
    General compliance provisions for highway, stationary, and nonroad programs.
  • 49 CFR Part 535
    Medium- and heavy-duty vehicle fuel efficiency program.

STEP 4: Prepare compliance reporting materials.

Download and complete the applicable materials below.

STEP 5: Submit the completed applicable compliance reporting materials in EV-CIS.

Login to EV-CIS through the CDX portal: Central Data Exchange (CDX)

Click the applicable industry role on the MyCDX homepage.

Submit the completed applicable compliance reporting materials by the required deadlines.

STEP 6: Confirm that your submission(s) from Step 5 were accepted by EV-CIS.

Within a few minutes of all submissions, the submitter will receive a notification in their CDX inbox indicating whether the submission was accepted or rejected.

To access your CDX inbox, click the "Inbox" link on the left navigation bar of the MyCDX homepage.