People use DWI and DUI like they are the same charge. In most states, the difference is just the local name. In Texas, they are two separate offenses aimed at two different drivers. If you or your kid picked up one of these charges in Collin County, which one it is changes everything about the case.
This is a general overview of how Texas law works. It is not legal advice, and every case is different.
The short answer
DWI stands for driving while intoxicated. It lives in Texas Penal Code Section 49.04 and applies to any driver, at any age, who operates a motor vehicle in a public place while intoxicated.
DUI in Texas means driving under the influence of alcohol by a minor. It lives in Alcoholic Beverage Code Section 106.041 and applies only to drivers under 21. It is a zero-tolerance law: any detectable amount of alcohol is enough. No breath test failure required.
So when an adult in Texas says “I got a DUI last night,” the charge on the paperwork almost certainly says DWI. And when a 17-year-old comes home with a DUI citation, that citation is its own criminal charge with its own consequences.
What the State has to prove
The two charges use different standards, and the gap between them is wide.
For DWI, the State has to prove intoxication. Under the Penal Code that means one of two things: a blood alcohol concentration of 0.08 or more, or the loss of the normal use of mental or physical faculties because of alcohol, drugs, or a combination. Prosecutors can win a DWI without any test result at all if the video and the officer’s testimony sell the faculties argument. That is also where these cases are fought: the stop, the field sobriety tests, the breath or blood evidence, each has weak points.
For DUI, the State only has to prove the driver was under 21 and had any detectable amount of alcohol. One drink an hour ago can be enough. There is no 0.08 debate because the statute does not care about 0.08.
What each charge costs
A first DWI is a Class B misdemeanor. The range includes 72 hours to 180 days in county jail and a fine, plus a separate state fine of $3,000 on a first conviction, $6,000 if the test showed 0.15 or more, unless the judge finds you indigent. A test result of 0.15 or more raises the charge to a Class A misdemeanor before enhancements even start. A second DWI is a Class A, a third is a felony, and the license consequences run on their own administrative track with their own deadline.
A first DUI by a minor is a Class C misdemeanor. That means a fine of up to $500, no jail, plus a license suspension, community service hours, and an alcohol awareness course. Repeat offenses climb from there, and for a 17-to-20-year-old with prior convictions the charge can eventually carry jail exposure. A driver under 17 holding a DUI citation goes to justice or municipal court like any other Class C charge; a driver under 17 who is actually intoxicated and charged with DWI is handled through the juvenile system.
Class C sounds small next to Class B. It is not nothing. A DUI conviction is a criminal record entry that follows a young person into college applications and first jobs. And it is a conviction many families accept by just paying the fine, without realizing what they gave up.
The trap inside the “minor” charge
Two things about the Texas DUI catch families off guard.
First, zero tolerance cuts both ways. Because the State does not have to prove intoxication, a DUI is easier to charge. But a minor who is actually intoxicated can be charged with full adult DWI instead. Prosecutors pick the charge that fits the evidence, and a 19-year-old who blows 0.10 is looking at the Class B offense, jail exposure and all.
Second, how the case resolves controls what can be cleared later. Texas law may allow a person convicted of a single offense under the Alcoholic Beverage Code as a minor, a DUI for example, to apply to have it expunged after turning 21. That door does not exist for a DWI conviction, and stacking up a second offense can close it too. A quick guilty plea to make the ticket go away is often the most expensive way to handle it.
The license clock runs separately
Both charges reach your license, and in a DWI arrest the license fight starts almost immediately. Once you are served with a notice of suspension, usually the night of a breath-test arrest and often later by mail in a blood-draw case, there are only 15 days to request the hearing that contests the suspension. That deadline does not wait for your court date. The details are covered in what happens if you refuse a breathalyzer in Texas.
What to do with this
If you are an adult facing a “DUI” in Collin County, the real charge is DWI, and it deserves a real defense: the stop, the tests, and the paperwork all get examined before anyone talks about pleading. If your son or daughter is holding a DUI citation, take it seriously: the record it creates is real even when the fine is small, and every piece of the State’s case deserves a look before anyone talks about pleading.
Kent Starr has practiced criminal defense since 1997 and handles DWI defense in the Collin County courts, from zero-tolerance citations to felony repeat allegations. The consultation is free, and the earlier the call, the more options stay open: (214) 982-1408.
Frequently asked questions
- Is a DUI and a DWI the same thing in Texas?
- No. In Texas, DWI (driving while intoxicated) is the Penal Code Section 49.04 offense that applies at any age when a driver is intoxicated. DUI (driving under the influence of alcohol by a minor) is Alcoholic Beverage Code Section 106.041, and it applies only to drivers under 21 who have any detectable amount of alcohol in their system.
- Which is worse in Texas, DWI or DUI?
- DWI carries heavier penalties. A first DWI is a Class B misdemeanor carrying 72 hours to 180 days in jail, a test result of 0.15 or more raises it to a Class A, and a third DWI is a felony. A first DUI by a minor is a Class C misdemeanor, which is fine-only, but it still creates a criminal record and a license suspension.
- Can someone under 21 be charged with DWI instead of DUI in Texas?
- Yes. If a driver under 21 is actually intoxicated, meaning a BAC of 0.08 or more or the loss of normal mental or physical faculties, prosecutors can file a full DWI under Penal Code Section 49.04. The zero-tolerance DUI charge covers cases where a minor has any detectable amount of alcohol but is not legally intoxicated.
- Does a Texas DUI stay on a minor's record?
- Yes, unless it is later cleared. A DUI conviction is a criminal record entry, and it can affect a young person's license and later applications. Texas law may allow a person convicted of a single Alcoholic Beverage Code offense as a minor, like a DUI, to apply to have it expunged after turning 21, so how the case is resolved matters.
- Why do people in Texas say DUI when they mean DWI?
- Most other states use DUI as the name for their adult drunk-driving offense, so the term dominates movies and everyday talk. Texas took a different path: DWI is the adult offense in the Penal Code, and DUI is a separate, minor-specific charge in the Alcoholic Beverage Code.