Lets diesel vehicles in cold areas avoid engine shutdowns due to emissions issues.
This bill would let manufacturers of diesel vehicles temporarily turn off certain engine shutdown features in very cold weather. It would also give year-round exemptions for emissions systems in extremely cold regions. This aims to prevent dangerous breakdowns for people who rely on these vehicles for essential services.
Today, diesel vehicles can experience engine power reductions or shutdowns in extreme cold if their emissions control systems, like diesel exhaust fluid (DEF) systems, malfunction. This bill would require the EPA to allow manufacturers to temporarily suspend these functions when temperatures are at or below 0 degrees Celsius. It would also grant year-round exemptions from DEF system requirements for vehicles in regions with prolonged freezing conditions. All these changes would take effect within 180 days of becoming law.
S 3135 · 119th Congress · November 6, 2025 · AI Summary by gemini-2.5-flash · 10/10
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12 filings mentioned this bill
Amounts reflect total quarterly lobbying spend reported to the Senate, not bill-specific spending. Source: Senate LDA filings.