A first DUI in Illinois: what it can result in

Illinois puts its threshold at 0.16 rather than the 0.15 most states use, and the consequence is not a higher class but a package that cannot be negotiated: a mandatory minimum of 100 hours of community service and a mandatory minimum fine of $500 on a first violation. Mandatory terms and community service under this section cannot be suspended or reduced by the court.

Start from what the statute forces and what it leaves to the judge. The floor here is set by the class, and it moves on the facts: a reading of 0.16 or more means mandatory service, days and money at every level. Everything above that floor is argued, and the same conviction can end up served in custody, on work release or as a condition of probation depending on the county and the judge. What no one can promise you is a sentence below the statutory minimum — that is not a question of persuasion.

Class A misdemeanor: set by the class, and a fine of mandatory minimum $500 at 0.16 or above. The range is set by 625 ILCS 5/11-501(c)(1), (c)(4), (f), and the figures on this page come from the statute rather than from a summary of it.

A reading of 0.16 or more — mandatory service, days and money at every level.

Illinois gives a first-time offender the Monitoring Device Driving Permit, which lets you drive without limits during the statutory summary suspension on one condition: a certified BAIID in the vehicle. The device blocks the engine at 0.025% and carries a camera that photographs whoever is blowing. The device requirement and the criminal penalty are separate tracks: one is handled by the court, the other by Illinois Secretary of State, BAIID Division.