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EPA finalizes the most stringent vehicle emission standards ever for model years 2027-2032

On April 18, 2024, the Environmental Protection Agency (EPA) published the final rule for “Multi-Pollutant Emission Standards for Model Years 2027 and Later Light-Duty and Medium-Duty Vehicles” originally issued March 20,...more

EPA’s proposes most stringent vehicle emission standards ever for model years 2027-2032

On April 12, 2023, the Environmental Protection Agency (EPA) issued the notice of proposed rulemaking for “Multi-Pollutant Emission Standards for Model Years 2027 and Later Light-Duty and Medium-Duty Vehicles” (the “proposed...more

EPA grants two of three preemption waivers for CARB heavy-duty vehicle and engine regulations

What is the significance of EPA’s March 30, 2023 Notice of Decision (pre-publication) granting two separate requests for waivers of Clean Air Act (“CAA”) preemption for California Air Resources Board (“CARB”) regulations...more

EPA Decision Reinstating California's Clean Air Act Waiver for GHG/ZEV

Today the U.S. Environmental Protection Agency (EPA) published its Notice of Decision in the Federal Register to rescind EPA’s 2019 withdrawal of California’s waiver of preemption under Section 209 of the Clean Air Act (CAA)...more

EPA Issues Final Rule for MY2023-2026 GHG Emission Standards for Light Duty Vehicles

On December 20, the Environmental Protection Agency (EPA) issued final greenhouse gas (GHG) light duty vehicle emissions standards for model years (MY) 2023-2026 passenger cars, light duty trucks, and medium duty passenger...more

EPA announces updated vehicle and engine tampering policy

The U.S. Environmental Protection Agency (EPA) recently released a long-awaited update to its enforcement policy on vehicle and engine tampering and aftermarket parts....more

NHTSA and EPA propose roll back of Obama-era car rules

The National Highway Traffic Safety Administration (NHTSA) and the U.S. Environmental Protection Agency (EPA) issued a joint notice of proposed rulemaking today, called the "Safer Affordable Fuel-Efficient (SAFE) Vehicles...more

EPA to Reconsider Final Determination on Midterm Evaluation of GHG Emission Standards for Light-Duty Vehicles

The Environmental Protection Agency (EPA) and the National Highway Traffic Safety Administration (NHTSA) are currently conducting a Midterm Evaluation as part of the 2012 GHG emission standards established for MY 2017-2025...more

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