In a DUI that injures someone, the charge itself is often not what drives the sentence. The great bodily injury enhancement under Penal Code 12022.7 is, because it adds years on top and can count as a strike. I am Joel Brand, and here is how this enhancement works and where it can be fought.
The text of the law
Penal Code 12022.7. (a) Any person who personally inflicts great bodily injury on any person other than an accomplice in the commission of a felony or attempted felony shall be punished by an additional and consecutive term of imprisonment in the state prison for three years. (f)(1) As used in this section, "great bodily injury" means a significant or substantial physical injury.
What the enhancement does
Section 12022.7 is not a crime on its own. It is a sentencing enhancement that attaches to an underlying felony, adding a consecutive three-year term when the defendant personally inflicted great bodily injury on someone other than an accomplice. In the DUI context it most often attaches to a felony DUI causing injury under Vehicle Code 23153 or to gross vehicular manslaughter, the two felony DUI charges most likely to involve a seriously injured victim. The three years are added on top of the base sentence, so the enhancement can matter more than the underlying charge. It is one of the most common reasons a felony injury DUI carries far more exposure than the bare statute suggests, and it is frequently the difference between a sentence a client can serve in county custody and a term in state prison.
What "great bodily injury" actually means
The statute defines great bodily injury as "a significant or substantial physical injury." That sounds broad, but it is a real, contestable standard. Not every injury qualifies. Minor cuts, bruises, soreness, or injuries that heal quickly may not rise to "significant or substantial." Whether a given injury meets the threshold is a question for the jury, decided on the actual medical evidence, and it is one of the first things I challenge with the records rather than accepting the prosecution's characterization.
The "personally inflicts" requirement
The enhancement requires that the defendant "personally" inflicted the injury. That causal and personal-conduct requirement is another opening. The injury has to be the direct result of the defendant's own act, and in a multi-vehicle collision with contested fault, establishing that the defendant personally caused a specific victim's qualifying injury is not always straightforward. Accident reconstruction and the medical causation evidence both matter here.
Why the strike consequence is so serious
A great bodily injury finding does more than add three years. It generally makes the underlying felony a "strike" under California's Three Strikes law. A strike has consequences that reach far beyond the current case: it can double the sentence on any future felony and limit custody credits, and a second strike changes a person's exposure for life. That lasting consequence is why defeating or avoiding a GBI finding is one of the most important objectives in a felony injury DUI, not just for today's sentence but for the future.
It can stack with other enhancements
There can be a separate enhancement for each additional victim who suffered great bodily injury, so in a multi-victim crash the added time can multiply quickly. Understanding exactly how many GBI allegations the prosecution can actually prove, and pushing back on each, is central to controlling the real exposure. The full enhancement picture is laid out in the California DUI penalties guide.
How I challenge a 12022.7 allegation
I attack the enhancement on its own terms in addition to defending the underlying DUI. That means testing whether the injury truly qualifies as "significant or substantial" with the medical records, whether the defendant personally and proximately caused it through accident reconstruction, and whether the prosecution can prove each separate allegation. Weakening the underlying felony, through the stop, the field sobriety testing, and the chemical evidence, also undercuts the enhancement, since 12022.7 has nothing to attach to if the felony falls. See my top DUI defenses and when a DUI is charged as a felony.
Why it is worth fighting hard
Because the enhancement adds mandatory, consecutive prison time and creates a strike, the difference between a case with a GBI finding and one without is measured in years and in lifelong consequences. Even where the underlying injury DUI is difficult to beat outright, defeating or limiting the 12022.7 allegation can transform the outcome, and it is a central focus from the start of the case.
The medical evidence decides it
Because the enhancement turns on whether an injury was "significant or substantial," the medical records are the heart of the fight. I obtain and review the treatment records, imaging, and any expert opinions rather than accepting the prosecution's label. Injuries that sound serious in a police report sometimes resolve quickly and completely, while genuinely qualifying injuries are documented in the medical evidence. Whether the threshold is met is ultimately a jury question, and presenting the actual medical picture, rather than the dramatic characterization, is how a GBI allegation is defeated or reduced.
Negotiating the enhancement away
Even in a strong injury case, the GBI allegation is often negotiable separately from the underlying charge. Because the strike consequence is so severe and lasting, removing or not pursuing the 12022.7 allegation can be a central goal of a plea, sometimes more important to the client's future than the length of the base term itself. A defendant who avoids a strike preserves their exposure on any future case and keeps doors open that a strike would close. I treat keeping the strike off the record as a priority in resolving these cases, not an afterthought.
Facing a great bodily injury allegation? Let's talk.
Whether the enhancement truly applies depends on the medical and causation evidence, which is exactly what I review. Use the free case analysis on this page, or call me directly at (888) 271-6644. I answer my own phone, 24/7.