The statute of limitations for a DUI is generally about one year for a misdemeanor and three to six years for a felony, though the exact deadline depends on your state and the specific charge. The clock starts on the date of the alleged offense, not the date of arrest or the date test results come back, and once it runs out, prosecutors lose the authority to file charges for that incident.
Misdemeanor DUI: Roughly One Year
A first-offense DUI without aggravating factors is a misdemeanor in most states. The filing window for misdemeanor DUI is commonly around one year from the date of the alleged offense. That sounds like a comfortable cushion, but prosecutors sometimes push close to the deadline, particularly when they’re waiting on evidence such as blood-test results from a backlogged crime lab.
Felony DUI: Three to Six Years
Felony DUI charges come out of more serious situations: repeat offenses within a certain number of years, crashes causing serious injury, or incidents involving a death. Because these cases involve more complex investigations and carry heavier penalties, legislatures give prosecutors more time to build them. Felony DUI statutes of limitations typically run three to six years, though the exact period depends on the state and the felony classification.
When a DUI results in a fatality, some states charge the case as vehicular homicide or manslaughter rather than as a DUI. Those charges can carry significantly longer filing deadlines, and in a handful of states, homicide-level offenses have no statute of limitations at all.
When the Clock Starts
The statute of limitations begins running on the date of the alleged offense. Not the date of arrest, not the date you receive test results, not the date charges are formally filed. If you were pulled over on March 1 and the prosecutor has one year, the deadline is March 1 of the following year, regardless of what happened in between.
This matters most when blood-test results are delayed. A breath test gives instant results at the scene, but a blood draw goes to a crime lab, and results can take weeks or months. Prosecutors still have to file within the original deadline. A late lab report does not extend the statute of limitations. In practice, this is one reason prosecutors sometimes file charges based on the officer’s observations and field sobriety tests, then supplement with toxicology evidence later.
Being released without charges after an arrest does not reset anything either. Some people assume the clock only starts once they’re formally charged, but the entire point of the limitation period is to cap how long the government can wait before bringing charges.
When the Clock Pauses
Most states pause, or “toll,” the statute of limitations under specific circumstances. The most common trigger is the defendant leaving the state. If someone is arrested for DUI and then moves away or otherwise becomes unavailable for prosecution, the clock typically stops running for the duration of their absence and resumes when they return. Leaving the jurisdiction after a DUI does not make the problem disappear. It usually just freezes the timeline.
Some states also toll the period while the defendant is incarcerated on unrelated charges. And if a case initially looks like a misdemeanor but later escalates to a felony, the longer felony deadline may apply. Tolling rules are entirely state-specific.
What Happens if the Deadline Passes
If the statute of limitations expires without charges being filed, the government loses its authority to prosecute that DUI. Any charges brought after the deadline are subject to dismissal, and a defense attorney would typically raise the expired statute as grounds for a motion to dismiss.
One important caveat: courts do not check this automatically. If charges are filed late and the defendant does not raise the issue, the case can proceed. The protection exists, but the defendant generally has to assert it.
License Suspension Runs on a Much Shorter Deadline
Separate from the criminal filing window, every state runs an administrative process for suspending or revoking your driver’s license after a DUI arrest. These deadlines are measured in days, not months or years, and missing them has immediate consequences.
In most states, you have roughly 10 to 30 days after a DUI arrest to request an administrative hearing to challenge the suspension. Miss that window and the suspension takes effect automatically, with no right to contest it. This deadline runs regardless of whether criminal charges have been filed.
The administrative track and the criminal track are independent. You can win your administrative hearing and keep your license but still face criminal charges. You can also have criminal charges dismissed or time-barred while your license suspension remains in effect. The administrative process is run by your state’s motor vehicle agency, not the criminal courts, and it follows its own rules.
This is where most people get tripped up after a DUI arrest. They focus on whether charges will be filed and don’t realize the license question has already started ticking.
Civil Lawsuits Are a Separate Timeline
An expired criminal statute of limitations only blocks prosecution. It does not shield you from a civil lawsuit. If your DUI involved a crash that injured someone or damaged property, the injured party can still sue you under the state’s personal injury statute of limitations, which is typically two to three years from the date of the injury.
Civil and criminal cases operate on different standards of proof and different timelines. A victim who didn’t sue immediately may still have years left to file, even after the prosecutor’s window has closed. The civil case does not depend on whether you were convicted, charged, or even arrested. It depends only on whether you caused harm and whether the civil deadline has passed.
If a government vehicle or a government employee on duty was involved, the civil deadline may be much shorter. Several states require claims against government entities within six months to a year.
Lookback Periods Are Not the Same Thing
Statutes of limitations often get confused with lookback periods, but they answer different questions. A statute of limitations governs how long the government has to file charges for a specific incident. A lookback period determines how far back prosecutors and courts can reach to count prior DUI convictions when setting penalties on a new offense.
A state with a five-year lookback period treats a driver’s second DUI within five years as a repeat offense with enhanced penalties. If that second DUI happens six years after the first, the court treats it as a first offense for sentencing. Some states use ten-year windows, and others apply lifetime lookbacks where any prior DUI conviction, no matter how old, increases penalties on a new charge.
The lookback period has nothing to do with whether old charges can still be filed. A DUI conviction from 15 years ago cannot be re-prosecuted, because the statute of limitations closed that door long ago. But in a lifetime-lookback state, that old conviction still counts if you pick up a new DUI today.