A DUI with serious bodily injury is the line where a misdemeanor becomes a felony, where prison becomes a real possibility, and where the State stops focusing on the breath machine alone and starts building a causation case. It is a third-degree felony, and a conviction follows you the way any felony does. The good news is that two questions decide most of these cases, and both are open to challenge: was the injury legally serious, and did your driving cause it.
| Charge | Felony degree | Maximum prison | Mandatory minimum |
|---|---|---|---|
| DUI with serious bodily injury | Third degree | 5 years | None |
| Vehicular homicide | Second degree | 15 years | None |
| DUI manslaughter | Second degree | 15 years | 4 years |
| BUI manslaughter | Second degree | 15 years | 4 years |
| Leaving the scene of a crash involving death | First degree | 30 years | 4 years |
| DUI second-degree murder | First degree | Life | None |
License consequences vary by charge, from a minimum three-year revocation to permanent revocation, and fines and sentencing-scoresheet points are additional. See each page for the full penalty and defense picture.
What the State has to prove
Under section 316.193(3)(c)2, the State has to prove that you operated or were in actual physical control of a vehicle, that you were impaired or had a breath or blood alcohol level of 0.08 or higher, and that by reason of that operation you caused or contributed to causing serious bodily injury to another person. The phrase that matters is by reason of your operation. A driver is not guilty of this felony merely because his vehicle was involved in the crash. The State has to tie your driving to the harm.
What serious bodily injury really means
Florida law defines serious bodily injury, in section 316.1933, as an injury that creates a substantial risk of death, serious personal disfigurement, or protracted loss or impairment of the function of a bodily member or organ. That definition does a lot of work, because plenty of real injuries do not meet it. Florida courts have held that a broken leg that left only a small permanent impairment was not serious bodily injury, and where the injury falls short of the statutory standard the charge is a misdemeanor, not a felony.
So the medical evidence is a battleground, not a formality. Hospital records, the treating physician’s notes, the nature of the surgery if there was one, and the actual long-term outcome all feed into whether the injury clears the bar. Pushing on that line is often the difference between felony and misdemeanor exposure.
The causation fight
Causation here works the same way it does in a DUI manslaughter case. Under the reasoning of the Florida Supreme Court’s decision in Magaw v. State, 537 So. 2d 564 (Fla. 1989), the causation attaches to your operation of the vehicle, not to the alcohol, and you do not have to be the sole cause. But it is still a real element. If the other driver ran the light, if the victim stepped into traffic, or if a mechanical failure caused the crash, then your operation may not have caused or contributed to the injury, even if you were impaired. The cleanest way to frame it is to ask whether a sober driver in the same position would have had the same crash. If the answer is yes, the impairment did not contribute.
There is one more wrinkle worth knowing. Florida courts have held that this felony cannot be charged where the only person injured was the driver. The statute is about causing serious bodily injury to another, and the rule of lenity resolves the ambiguity in the defendant’s favor, so a single-vehicle crash where you alone were hurt does not support the charge. See the DUI manslaughter page for how the same causation analysis plays out when there is a death.
A felony, but no mandatory minimum
This is the practical difference between this charge and DUI manslaughter. A serious bodily injury DUI is a third-degree felony, punishable by up to five years and a $5,000 fine, but there is no four-year mandatory minimum. A judge has discretion, which means the sentencing exposure is real but not fixed, and a strong mitigation case moves the needle. That also means the most valuable work is often done before sentencing, in getting the charge reduced or the felony off the table entirely.
The blood draw and the forensic case
Because these crashes usually send the driver to a hospital, the State almost always relies on a blood draw rather than a breath test. Florida law lets an officer demand a blood draw where there is probable cause that an impaired driver caused serious bodily injury, even without a warrant in some situations, but the probable cause and the draw still have to hold up. The draw, the storage, the chain of custody, and the gas chromatography analysis are all open to challenge, and an unreliable result can take the State’s number off the table. This is the heart of my forensic practice. The blood test and search and seizure pages go into the detail.
I started out as an Assistant Public Defender in Florida’s Thirteenth Judicial Circuit, in Tampa, and today I am one of six ACS-CHAL Forensic Lawyer-Scientists in Florida. These are the cases where the science and the causation decide everything, where an unreliable blood result or an unproven causal link is the difference between a manslaughter conviction and a far lesser charge. I bring the forensic and the crash-reconstruction fight that these cases turn on. Learn more about my background.
Related: the serious and felony DUI overview, DUI manslaughter, vehicular homicide, DUI penalties, the blood test, and search and seizure.
Florida DUI serious bodily injury questions
What is the penalty for DUI with serious bodily injury in Florida?
It is a third-degree felony under section 316.193(3)(c)2, punishable by up to five years in prison and a $5,000 fine, with a minimum three-year license revocation. Unlike DUI manslaughter, there is no four-year mandatory minimum, so a judge has real room at sentencing, which is one reason the felony classification itself is often the thing worth fighting.
What counts as serious bodily injury?
Florida defines it as an injury that creates a substantial risk of death, serious personal disfigurement, or protracted loss or impairment of the function of a bodily member or organ. Not every injury qualifies. Courts have held that a broken leg leaving a small permanent impairment did not meet the standard, so whether the injury is legally serious is frequently the dividing line between a felony and a misdemeanor.
Can a DUI serious bodily injury charge be reduced?
Often, yes. If the injury does not meet the legal definition of serious, the charge can drop to a misdemeanor DUI with bodily injury or property damage. If the State cannot prove your operation of the vehicle caused or contributed to the injury, or if the blood evidence is unreliable, the felony can fall away. Causation and the definition of the injury are the two main levers.
Does the State have to prove my driving caused the injury?
Yes. Being involved in a crash is not enough. The State has to prove that by reason of your operation of the vehicle you caused or contributed to causing the injury while you were impaired or over the limit. Where the other driver, the victim, or a mechanical failure caused the crash, that causal link may be missing.
Will I lose my license?
A conviction carries a minimum three-year license revocation, though you may apply for a hardship license immediately and must complete DUI school. The felony record itself, separate from the license, is usually the larger long-term concern, which is why avoiding the conviction is the goal.
This page is general information about Florida law, not legal advice, and it does not create an attorney-client relationship. The charges discussed here are governed by sections 316.193(3), 316.027, 327.35, and 782.071, Florida Statutes, and the 2025 changes under Trenton’s Law apply to offenses on or after October 1, 2025. Every case turns on its own facts, and past results do not guarantee a similar outcome.
