Manufacturer-Run In-Use Testing Program Data for Heavy-Duty Diesel Engines
This page provides manufacturer-run in-use testing program data from heavy-duty diesel engine manufacturers in compliance with 40 CFR 86 Subpart T. The data are organized by test order year and have been redacted for Confidential Business Information but otherwise are as provided to EPA by the manufacturers. No test orders were issued in 2020 due to the Covid-19 pandemic.