# Illinois HB4399: VEH CD-BIODIESEL USE

Illinois HB4399, VEH CD-BIODIESEL USE, is a 104th General Assembly (2025–2026) House bill sponsored by Eva-Dina Delgado (Democratic); status in committee, last action 2026-03-27 (Rule 19(a) / Re-referred to Rules Committee) (as of 2026-11-01).

- Canonical: https://policyrisk.com/state-bill/IL-HB4399-2025-2026
- As of: 2026-11-01
- Plain-text twin of the page above; the HTML and this file carry the same facts.

## Facts
- Bill: Illinois HB4399
- State: Illinois
- Session: 104th General Assembly (2025–2026)
- Title: VEH CD-BIODIESEL USE
- Status: in committee
- Chamber: House
- Introduced: 2026-01-13
- Last action: 2026-03-27, Rule 19(a) / Re-referred to Rules Committee
- Sponsor: Eva-Dina Delgado (Democratic)
- Cosponsors: 0
- Subjects: transportation: vehicles & safety
- Touches household money: no
- Economic provisions PRIA read: 0

## Summary

Amends the Illinois Vehicle Code. Provides that, beginning July 1, 2027, a diesel powered vehicle owned or operated by the State, any county or unit of local government, any school district, any community college or public college or university, or any mass transit agency must use a biodiesel blend that contains 19%, unless the engine is designed or retrofitted to operate on a higher percentage of biodiesel or on ultra low sulfur fuel. Allows, in December, January, February, and March, a biodiesel blend of at least 10% to be used. Effective immediately.

## Bill overview

No economic impacts identified for this bill.

## Sponsors and cosponsors

- Sponsor: Eva-Dina Delgado (Democratic), House

## Actions (5)

- 2026-03-27: Rule 19(a) / Re-referred to Rules Committee (House)
- 2026-02-11: Assigned to Transportation: Vehicles & Safety (House)
- 2026-01-14: Referred to Rules Committee (House)
- 2026-01-14: First Reading (House)
- 2026-01-13: Filed with the Clerk by Rep. Eva-Dina Delgado (House)

## Bill text

- Introduced: [PDF](https://www.ilga.gov/documents/legislation/104/HB/PDF/10400HB4399.pdf)

## Related bills

- HB5198: AFFORDABLE HOUSING-CILAS (passed house)
- SB1937: PENSION CODE-VARIOUS (passed senate)
- HB2563: CONDO-RESERVE STUDY (in committee)
- HB4701: LIMITATIONS FACILITY FEES ACT (in committee)
- SB3008: DHS-ABLE PROGRAM INFO MATERIAL (passed senate)
- SB3484: VEH CD-PLATES-REGISTRATION (signed)

## Sources
- [Introduced (PDF)](https://www.ilga.gov/documents/legislation/104/HB/PDF/10400HB4399.pdf)

## Related
- [HB5198: AFFORDABLE HOUSING-CILAS](https://policyrisk.com/state-bill/IL-HB5198-2025-2026)
- [SB1937: PENSION CODE-VARIOUS](https://policyrisk.com/state-bill/IL-SB1937-2025-2026)
- [HB2563: CONDO-RESERVE STUDY](https://policyrisk.com/state-bill/IL-HB2563-2025-2026)
- [HB4701: LIMITATIONS FACILITY FEES ACT](https://policyrisk.com/state-bill/IL-HB4701-2025-2026)
- [SB3008: DHS-ABLE PROGRAM INFO MATERIAL](https://policyrisk.com/state-bill/IL-SB3008-2025-2026)
- [SB3484: VEH CD-PLATES-REGISTRATION](https://policyrisk.com/state-bill/IL-SB3484-2025-2026)
- [Illinois bills](https://policyrisk.com/states/illinois/bills)
- [Illinois state hub](https://policyrisk.com/states/illinois)
- [All state legislation](https://policyrisk.com/state-bills)

Source: PRIA, https://policyrisk.com/state-bill/IL-HB4399-2025-2026 (as of 2026-11-01).