Comment submitted by Manufacturers of Emission Controls Association (MECA)
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Summary: The Manufacturers of Emission Controls Association (MECA) supports the EPA's Tier 4 criteria pollutant standards for light-duty and medium-duty vehicles as originally finalized in 2024. They argue against delaying the implementation of these standards for model years 2027 and 2028, citing significant investments already made by suppliers, the technological feasibility of meeting the standards without relying on electric vehicles, and the risk of stranded investments and job losses.
Please find attached comments from the Manufacturers of Emission Controls Association on EPA's Proposed Rule titled "Tier 4 Criteria Pollutant Standards, Part 1: Phase-In Schedule for Light-Duty and Medium-Duty Vehicles.