Comment submitted by Kia Corporation
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Summary: Kia Corporation supports the EPA's proposal to extend Tier 3 standards for model years 2027 and 2028 to provide manufacturers with more lead time and market stability. The company also supports the proposal to issue a separate rulemaking for Tier 4 amendments starting in 2029 to ensure technological feasibility and consumer affordability.
Please find attached comments from Kia Corporation in response to EPA's Tier 4 Criteria Pollutant Standards, Part 1: Phase-In Schedule for Light-Duty and Medium-Duty Vehicles.