DUI Penalties, Priors & Felony DUI

What is DUI manslaughter and what is the sentence?

Attorney-Reviewed Answer
Reviewed by Christopher Walsh, Criminal Trial Attorney (Fla. Bar #127459). Last reviewed: September 2026
Short Answer
A second-degree felony with a four-year mandatory minimum, up to fifteen years — and a first-degree felony carrying up to thirty years where the person has a prior qualifying fatality conviction.

DUI manslaughter is charged where a person drives or is in actual physical control while impaired and causes the death of another person, including an unborn child. It's a second-degree felony with a four-year mandatory minimum sentence, up to fifteen years, and permanent license revocation.

Trenton's Law, effective October 1, 2025, added an enhancement. Where the person has a prior conviction for DUI manslaughter, BUI manslaughter, vehicular homicide, or vessel homicide, the new offense is a first-degree felony carrying up to thirty years, and it ranks at Level 9 on the sentencing severity chart.

Two things about that enhancement people get wrong, covered separately in the next answers: a prior ordinary DUI doesn't trigger it, and there's no time limit on how old the qualifying prior can be.

Leaving the scene compounds it substantially — where a driver knew or should have known a crash occurred and failed to stop, the exposure increases sharply.

Nobody should face this charge without counsel involved from the first day. ---

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This page answers a common question for general informational purposes and is not legal advice, and no attorney-client relationship is formed by reading it. Florida law changes; while this answer is reviewed by a licensed Florida attorney, the right answer depends on the specific facts of your situation — consult an attorney. Serving Martin, St. Lucie, Palm Beach, Indian River, and Okeechobee Counties.