DWI / DUI
The difference between a DUI and a DWI in New Jersey
Here's the answer up front: in New Jersey there isn't one. Both terms describe the same offense under the same statute. The interesting differences are the ones between New Jersey and everywhere else, and those trip people up constantly.
One Statute
In New Jersey, both words mean 39:4-50
New Jersey's statute is N.J.S.A. 39:4-50, and its actual term is driving while intoxicated. It covers operating a vehicle under the influence of alcohol or drugs, or with a blood alcohol concentration of 0.08% or more.
"DUI" (driving under the influence) is simply the more common national phrase, so New Jersey police, prosecutors, and lawyers use the two interchangeably. There is no separate drunk-driving charge, no lesser "impaired" tier under a different name, and no scenario where your outcome depends on which acronym got written down. Whether the summons says DUI or DWI, you're facing the same statute, the same penalty tiers, and the same defenses.
What actually moves the needle in a New Jersey case is the tier and your history: BAC level (0.08–0.10, 0.10–0.15, 0.15 and up, each with its own interlock and forfeiture consequences), whether drugs rather than alcohol are alleged, and whether you have prior convictions within the 10-year lookback. Our DWI defense page and the jail-exposure guide break those down.
Why the Confusion
Other states really do split the terms
The internet is written for fifty states at once, which is how myths migrate. In some states DUI and DWI are genuinely different charges, one for alcohol above the limit, one for impairment by any substance, sometimes with different penalty ladders. Texas, New York, and Maryland each slice it differently. None of that applies here, and two imported "facts" in particular deserve correcting because they change how scared people are, in both directions:
"DUI is a criminal charge." Not in New Jersey. DWI here is a motor-vehicle offense, tried to a judge in municipal court with no jury, and a conviction does not create a criminal record. That's genuinely better than the felony DUI schemes elsewhere. But don't relax too far: the penalties are heavier than most criminal sentences at the municipal level, the conviction sits on your driving record permanently, and it can never be expunged, precisely because it isn't criminal.
"Repeat offenses become felonies." Also not New Jersey. A third DWI is still a traffic offense; it just carries a mandatory 180 days in county jail and an 8-year license forfeiture. Where real criminal exposure enters is through companion conduct: an injury crash can bring assault by auto, a death can bring vehicular homicide, and driving while suspended for a DWI has its own mandatory penalties with indictable exposure for repeats.
What to take from all this
Ignore the acronym on your paperwork; it tells you nothing. What tells you plenty: your BAC reading, whether the state alleges drugs, your prior record, and the quality of the stop and testing behind the charge. New Jersey DWI cases are technical, built on device calibration, observation periods, and procedure, and technical cases can be fought. The sooner the file gets read by someone who knows what to look for, the more options you have.
Common Questions
DUI vs. DWI questions, answered
Is a DUI or a DWI worse in New Jersey?
Neither, because they are the same thing here. Both labels point to N.J.S.A. 39:4-50, driving while intoxicated, which covers alcohol and drugs alike. The seriousness turns on your BAC tier and prior offenses, not on which word appears on paper.
Is a DWI a criminal charge in New Jersey?
No. DWI is a motor-vehicle offense heard in municipal court, with no jury and no criminal record from a conviction. The penalties are still severe — fines, ignition interlock, license forfeiture, and jail that is mandatory for repeat offenses — and the conviction stays on your driving record permanently.
Can a repeat DWI turn into a felony?
Not by repetition alone; a third DWI is still a traffic offense, though it carries a mandatory 180 days in jail and an 8-year license forfeiture. Criminal charges enter the picture when something more happens, like an injury crash charged as assault by auto, or repeatedly driving while suspended for DWI.
Does “DWI” cover drugs, or just alcohol?
Both. The statute covers operating under the influence of intoxicating liquor or drugs, including prescription medication and marijuana, which is why New Jersey lawyers use DUI and DWI interchangeably. Drug cases are proven differently, usually through officer observations and Drug Recognition Expert testimony rather than a number.
Whatever the summons calls it, it's fightable.
Tell us your reading and what the summons says, and we'll give you a straight read on your tier, your exposure, and where the state's case is soft.