Changes to Car Emission Standards: Delayed Timeline for Cleaner Vehicles
Official: Revision of Tier 4 Criteria Pollutant Standards, Part 1: Amendments to Phase-In Schedule for Light-Duty and Medium-Duty Vehicles
Reading: The EPA proposes to extend Tier 3 standards (less stringent) for certain light- and medium-duty vehicles through model years 2027–2028, delaying the Tier 4 phase-in from its original schedule to MY 2029, thereby postponing more stringent emissions standards.
The EPA says this change is needed because of feasibility concerns with manufacturers meeting the tighter deadlines.
In clear language
The EPA is proposing to delay when new, stricter pollution standards for cars and trucks take effect. Instead of starting in 2027, the stricter Tier 4 standards would now begin in 2029 for some vehicles, while older Tier 3 standards would continue for 2027 and 2028. The EPA says this change is needed because of feasibility concerns with manufacturers meeting the tighter deadlines.
How does this affect you?
Pick the type of resident or organization you most identify with — we'll generate a plain-language breakdown of what changes for you and what you can do about it.
Who does this affect?
- Car and truck manufacturers who make light-duty and medium-duty vehicles
- New Jersey residents who drive or will purchase new cars and trucks
- People living in areas with air quality concerns, as cleaner emission standards are delayed
- Environmental advocates concerned with air pollution timelines
What can you do?
- Review the Federal Register document at the provided URL and submit a public comment if you support or oppose the delay
- Stay informed about vehicle emission standards when shopping for a new car, as this affects how clean new vehicles will be
- Contact your New Jersey representatives to express your views on delaying stricter pollution standards
Timeline
- 2027-2028: Tier 3 standards continue for certain vehicles
- 2029: Tier 4 stricter standards begin (under this proposal)
No New Jersey official has a verified action on this policy yet.
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