# 119-s-3135: Cold Weather Diesel Reliability Act of 2026

119-s-3135, Cold Weather Diesel Reliability Act of 2026, is a 119th Congress bill sponsored by Sen. Sullivan, Dan [R-AK] (R-AK); status in_committee; PRIA reads it as touching household money (as of 2026-10-25).

- Canonical: https://policyrisk.com/legislation/119-s-3135
- As of: 2026-10-25
- Plain-text twin of the page above; the HTML and this file carry the same facts.

## Facts
- Bill: 119-s-3135
- Congress: 119
- Title: Cold Weather Diesel Reliability Act of 2026
- Status: in_committee
- Introduced: 2025-11-06
- Sponsor: Sen. Sullivan, Dan [R-AK] (R-AK)
- Cosponsors: 3
- Policy area: Environmental Protection
- Touches household money: yes
- Last recorded action: 2026-10-25

## Summary

**This bill would let certain diesel manufacturers temporarily suspend emissions-triggered engine derate or shutdown when ambient temperatures are at or below 20°F.** It also creates a separate pathway to allow permanent suspension for agricultural equipment and for vehicles primarily operated north of 59° N latitude, subject to documentation of commercial operation. - Covered manufacturers would be authorized to suspend inducement-related engine derate or shutdown functions when ambient temperatures are 20°F or colder. Engines must return to normal emissions-control operation once temperatures rise above 20°F and EPA must write the rule within 180 days. - Farmers and operators of agricultural equipment could seek a permanent suspension pathway if they document commercial operation and provide dispatch records, with EPA directed to establish that pathway within 180 days. - Operators of vehicles primarily run north of 59° N latitude can qualify for the same permanent relief after demonstrating their operational profile and meeting documentation requirements. - The Environmental Protection Agency would revise Clean Air Act regulations to implement these limited suspensions while the bill says it does not waive other emissions standards except as explicitly provided.

## Cosponsors (3)

- Sen. Lummis, Cynthia M. [R-WY] (R-WY), 2025-11-06T00:00:00.000Z
- Sen. Curtis, John R. [R-UT] (R-UT), 2026-02-26T00:00:00.000Z
- Sen. Murkowski, Lisa [R-AK] (R-AK), 2026-03-02T00:00:00.000Z

## Provisions PRIA read

- Fewer diesel shutdowns in cold: benefit, low. This bill would let certain diesel manufacturers suspend engine derates or shutdowns caused by emissions-system faults when the outside temperature is 20°F or below. The EPA would have 180 days after enactment to update rules to allow this. The agency would also have 180 days to let manufacturers p…

## Related bills

- 119-s-524: Coast Guard Authorization Act of 2025
- 119-s-3923: Weather Research and Forecasting Innovation Reauthorization Act of 2026
- 119-s-1748: Kids Online Safety Act
- 119-s-1541: SHIPS for America Act of 2025
- 119-s-5025: Lindsey O. Graham Sanctioning Russia Act of 2026
- 119-s-1241: Sanctioning Russia Act of 2025

## Sources
- [119-s-3135 on Congress.gov](https://www.congress.gov/bill/119th-congress/senate-bill/3135)

## Related
- [119-s-524: Coast Guard Authorization Act of 2025](https://policyrisk.com/legislation/119-s-524)
- [119-s-3923: Weather Research and Forecasting Innovation Reauthorization Act of 2026](https://policyrisk.com/legislation/119-s-3923)
- [119-s-1748: Kids Online Safety Act](https://policyrisk.com/legislation/119-s-1748)
- [119-s-1541: SHIPS for America Act of 2025](https://policyrisk.com/legislation/119-s-1541)
- [119-s-5025: Lindsey O. Graham Sanctioning Russia Act of 2026](https://policyrisk.com/legislation/119-s-5025)
- [119-s-1241: Sanctioning Russia Act of 2025](https://policyrisk.com/legislation/119-s-1241)
- [All bills in Congress](https://policyrisk.com/legislation)

Source: PRIA, https://policyrisk.com/legislation/119-s-3135 (as of 2026-10-25).