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HB 4399 Illinois House · 104th Regular Session

VEH CD-BIODIESEL USE

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.
Issues: ✓ EnergySupports EnergyMandates 19% biodiesel blend for public vehicles, promoting renewable energy use and reducing fossil fuel dependence.95% confidence ✓ EnvironmentSupports EnvironmentRequires 19% biodiesel blend in government vehicles, promoting cleaner energy use and reducing emissions from transportation fleets.95% confidence ✓ TransportationSupports TransportationMandates 19% biodiesel blend for government-owned vehicles, promoting sustainable fuel use in transportation infrastructure per Illinois Vehicle Code amendment.95% confidence
Bill status in committee 1 of 4 stages cleared
Introduction
Jan 2026
Committee Review
Floor Vote
Governor
Introduced Jan 13, 2026 Last action Mar 27, 2026
Floor votes

How they voted

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Full legislative history

Actions timeline

Total actions
5
Key actions
0
Committee
3
Mar 27, 2026
Committee
Rule 19(a) / Re-referred to Rules Committee
lower
Feb 11, 2026
Committee
Assigned to Transportation: Vehicles & Safety
lower
Jan 14, 2026
Committee
Referred to Rules Committee
lower
1 primary · 0 co-sponsors

Sponsors

Role
Legislator
Party
State
District
P
Photo of Eva-Dina Delgado
Eva-Dina Delgado
DDemocratic
IL
3