Illinois 104th General Assembly Status: Introduced 1 D cosponsors

HB4399      — VEH CD-BIODIESEL USE

Last action — Rule 19(a) / Re-referred to Rules Committee

  1. 1
    Introduced
  2. 2
    In Committee
  3. 3
    Passed House
  4. 4
    Passed Senate
  5. 5
    To Executive
  6. 6
    Enacted

This bill has been introduced in the House. Introduced January 13, 2026. It must pass committee before a floor vote.

Next likely step: a committee referral and hearing.

Prognosis

Not enough signal yet

Where this bill stands today.

Odds of enactment

Low

How often bills like it became law.

Not enough signal yet to read this bill's trajectory — we surface a likelihood only once there's real movement (stage, sponsorship, committee, or votes) to point to.

Prognosis reads this bill's own signals — stage, sponsorship breadth, committee status, recorded votes and cross-state momentum. Odds come from a model trained on which bills have become law.

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 Text

We don't have the full text on file for this bill yet.

Read HB4399 on the official Illinois source →

Action History

  1. Rule 19(a) / Re-referred to Rules Committee

  2. Assigned to Transportation: Vehicles & Safety

  3. Referred to Rules Committee

  4. First Reading

  5. Filed with the Clerk by Rep. Eva-Dina Delgado

Sponsors

Sponsorship breakdown

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1 sponsors · 0 co-sponsors · 182 not signed on

Sponsors (1)

Co-sponsors (0)

None.

Not signed on (182)

182 members have not signed on to this bill.

Show all 182 →

"Not signed on" means a member has not sponsored or co-sponsored this bill — it does not imply opposition. Members flagged Voted No have a recorded No vote on this bill.

Whip count is in markup. Polling the chamber and every recorded vote this session. Only the first open is slow. It’s instant for you after this. Calling the roll · Tallying · Engrossing

Subjects

environment transportation energy
Cross-referencing the record. Reading this bill against every other bill in the corpus by meaning, not keywords. Only the first open is slow. It’s instant for you after this. Matching · Ranking · Engrossing

Frequently asked questions

What does HB4399      do?
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.
Who sponsors HB4399     ?
HB4399      is sponsored by Eva-Dina Delgado (Democrat).
What is the current status of HB4399     ?
This bill has been introduced in the House. Introduced January 13, 2026. It must pass committee before a floor vote.
Where can I track HB4399     ?
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Last checked for changes 3 months ago · updated continuously

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