Emissions rules get a flexibility loophole—and industry gets a say

What it does

This bill modifies federal fuel economy (CAFE) and greenhouse gas emissions standards for vehicles. It allows the EPA and Department of Transportation to adjust emissions targets for 2035 based on market conditions and technology, creates a 'deemed compliance' mechanism so manufacturers meeting one standard automatically satisfy the other, establishes new heavy-duty truck emissions standards by 2027, and requires biennial progress reports. If agencies miss deadlines, 2025 standards continue through 2035.

Why we flagged it

The bill's core function is to restructure how vehicle emissions are regulated by introducing discretionary adjustment authority, creating compliance equivalencies, and deferring heavy-duty standards. It is not a deregulation bill per se, but a reframing of enforcement mechanisms that shifts power toward agency discretion and away from fixed targets.

What the text implies

• The 'deemed compliance' mechanism (Sections 403–404) allows manufacturers to meet EITHER fuel economy OR emissions standards and automatically satisfy both. This creates a compliance arbitrage: a manufacturer could meet a weaker CAFE standard via penalties/credits and claim full emissions compliance without reducing actual tailpipe CO2.
• The adjustment authority in Section 402 grants EPA/DOT discretion to lower 2035 standards based on 'market conditions' and 'economic impact.' No floor is specified; standards could be adjusted downward indefinitely if industry argues feasibility or cost concerns.

The full analysis lists 4 implications of this text.

Who stands to gain

automotive manufacturers; fossil fuel producers; heavy-duty truck manufacturers