North Carolina's rule on DUI penalties turns on a feature the national template does not capture: BAC limits: 0.08% for adults; 0.04% for commercial drivers; zero-tolerance for drivers under 21. A first offense: First-offense DWI is typically a misdemeanor with fines, possible jail, license revocation, substance-abuse assessment, and ignition-interlock conditions for higher-BAC cases. Felony threshold: Habitual DWI (generally three priors) is a felony; DWI causing serious injury or death can also be a felony. The controlling authority is N.C. Gen. Stat. § 20-138.1. Lookback: Prior DWI convictions within 7 years (and 10 years for some felony habitual tracks) enhance penalties.. Ignition interlock: Ignition interlock is required for many AG-level and repeat DWI offenders as a condition of limited driving privilege.
Key takeaways
- BAC limits: 0.08% for adults; 0.04% for commercial drivers; zero-tolerance for drivers under 21
- Lookback period: Prior DWI convictions within 7 years (and 10 years for some felony habitual tracks) enhance penalties.
- First-offense range: First-offense DWI is typically a misdemeanor with fines, possible jail, license revocation, substance-abuse assessment, and ignition-interlock conditions for higher-BAC cases.
- Felony threshold: Habitual DWI (generally three priors) is a felony; DWI causing serious injury or death can also be a felony.
- Ignition interlock: Ignition interlock is required for many AG-level and repeat DWI offenders as a condition of limited driving privilege.
- Primary authority: N.C. Gen. Stat. § 20-138.1.
Worked example under North Carolina law
The illustration below uses only rules already stated for North Carolina. It is a research hypothetical, not a prediction of what a court will do.
A driver in North Carolina is charged with a first impaired-driving offense and wants to know what the statute actually sets.
- Start with the alcohol limits: 0.08% for adults; 0.04% for commercial drivers; zero-tolerance for drivers under 21
- Read the first-offense range: First-offense DWI is typically a misdemeanor with fines, possible jail, license revocation, substance-abuse assessment, and ignition-interlock conditions for higher-BAC cases.
- Ask when the charge becomes a felony: Habitual DWI (generally three priors) is a felony; DWI causing serious injury or death can also be a felony. Lookback: Prior DWI convictions within 7 years (and 10 years for some felony habitual tracks) enhance penalties.
- Interlock: Ignition interlock is required for many AG-level and repeat DWI offenders as a condition of limited driving privilege.
North Carolina DWI under § 20-138.1 proceeds in district court with parallel DMV actions. Defense reviews the stop and Intoximeter / blood record.
Blood alcohol limits in North Carolina
0.08% for adults; 0.04% for commercial drivers; zero-tolerance for drivers under 21
Lookback window for prior offenses
Prior DWI convictions within 7 years (and 10 years for some felony habitual tracks) enhance penalties.
First-offense penalties
First-offense DWI is typically a misdemeanor with fines, possible jail, license revocation, substance-abuse assessment, and ignition-interlock conditions for higher-BAC cases.
When a North Carolina DUI becomes a felony
Habitual DWI (generally three priors) is a felony; DWI causing serious injury or death can also be a felony.
Ignition interlock and license consequences
Ignition interlock is required for many AG-level and repeat DWI offenders as a condition of limited driving privilege.
How a typical North Carolina DUI case unfolds
North Carolina DWI under § 20-138.1 proceeds in district court with parallel DMV actions. Defense reviews the stop and Intoximeter / blood record.
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Case law: DUI penalties in North Carolina
State of North Carolina v. Maxie Thomas Coker, Jr.
State of North Carolina v. Maxie Thomas Coker, Jr., 312 N.C. 432 (1984)
…enacted provision to combine formerly separate offenses of driving under the influence of intoxicating beverage and driving with a .10 percent of blood alcohol into one offense. The former statute provided: § 20-138. Persons under the influence of intoxicating liquor. — (a) It is unlawful and punishable as provided in G.S. 20-179 for any person who is under the influence of in…
Practitioners open State of North Carolina v. Maxie Thomas Coker, Jr. when North Carolina DUI penalties turns on the distinction in this sentence: "The former statute provided: § 20-138. Persons under the influence of intoxicating liquor. — (a) It is unlawful and punishable as provided in G.S." Do not lift it out of the facts the court was deciding.
STATE OF NORTH CAROLINA v. KIM RILEY McGILL
STATE OF NORTH CAROLINA v. KIM RILEY McGILL, 314 N.C. 633 (1985)
…ghter, the state must prove not only that the defendant was driving under the influence and that this proximately caused the victim’s death, but that the defendant’s intoxication caused him to violate some other rule of the road that in turn caused the death. We hold that only one causal link must be shown — that between the intoxication and the death. No additional misconduct…
On DUI penalties, STATE OF NORTH CAROLINA v. KIM RILEY McGILL speaks to the North Carolina dispute in this passage: "We hold that only one causal link must be shown — that between the intoxication and the death." The surrounding opinion shows how the court applied that language to the record.
State of North Carolina v. Don Legene Basinger
State of North Carolina v. Don Legene Basinger, 30 N.C. App. 45 (1976)
…l be treated as a lesser included offense of the offense of driving under the influence.” The 1973 amendment to G.S. 20-138, effective 1 January 1975, added subsection (b). First, defendant argues that the new offense of driving when the alcohol in one’s blood is 0.10 percent or more by weight is an arbitrary and unconstitutional exercise of the police power of the State becaus…
State of North Carolina v. Don Legene Basinger is worth reading on North Carolina DUI penalties because the court put the point in its own words: "The 1973 amendment to G.S. 20-138, effective 1 January 1975, added subsection (b). First, defendant argues that the new offense of driving when the alcohol in one’s blood is 0." Use that passage as the starting point, then read the facts that precede it.
State of North Carolina v. Obie George Hill
State of North Carolina v. Obie George Hill, 31 N.C. App. 733 (1976)
…l be treated as a lesser included offense of the offense of driving under the influence.” Since G.S. 20-138 (b) is treated as a lesser included offense within G.S. 20-138 (a) defendant contends that the sources of the proscribed alcohol in G.S. 20-138 (b) must be an intoxicating beverage. He supports this argument by asserting that G.S. 20-139, forbidding one to drive while und…
State of North Carolina v. Obie George Hill is worth reading on North Carolina DUI penalties because the court put the point in its own words: "Since G.S. 20-138 (b) is treated as a lesser included offense within G.S. 20-138 (a) defendant contends that the sources of the proscribed alcohol in G.S. 20-138 (b) must be an intoxicating beverage. He supports this argument by asserting that G.S." Use that passage as the starting point, then read the facts that precede it.
State of North Carolina v. Robert Joseph Karbas
State of North Carolina v. Robert Joseph Karbas, 28 N.C. App. 372 (1976)
…n that the Superior Court did not have jurisdiction of the “driving under the influence” charge is based on the argument that the Superior Court could acquire jurisdiction of the misdemeanor only by appeal from a District Court which retained its exclusive, original jurisdiction with the nolle prosequi. With this position we disagree. G.S. 7A-272 grants original jurisdiction fo…
North Carolina opinions such as State of North Carolina v. Robert Joseph Karbas are cited where DUI penalties is disputed. The court stated: "Superior Court could acquire jurisdiction of the misdemeanor only by appeal from a District Court which retained its exclusive, original jurisdiction with the nolle prosequi. With this position we disagree. G.S." That is the language to brief; the rest of the decision supplies the procedural posture.
MARC ANTHONY TORAIN, JULIET v. TORAIN, DAVID W. TORAIN, JR., and CHARLES TORAIN, CHILDREN OF DAVID WILLIAM TORAIN
…ced the accident. Patrolman Davis charged the employee with driving under the influence. 19. When the employee arrived at the hospital a history was obtained that he had “blacked out” prior to the collision. Past medical history was obtained from the family which indicated that he was a severe drinker. 21. At the time complained of the employee was intoxicated, and the accident…
Practitioners open MARC ANTHONY TORAIN, JULIET v. TORAIN, DAVID W. TORAIN, JR., and CHARLES TORAIN, CHILDREN OF DAVID WILLIAM TORAIN when North Carolina DUI penalties turns on the distinction in this sentence: "Patrolman Davis charged the employee with driving under the influence. 19. When the employee arrived at the hospital a history was obtained that he had “blacked out” prior to the collision." Do not lift it out of the facts the court was deciding.
State of North Carolina v. Commie Lester Bunton
State of North Carolina v. Commie Lester Bunton, 27 N.C. App. 704 (1975)
…permissible verdict in this case his guilt of first offense driving under the influence of intoxicating liquor. If so, the error was favorable to defendant and he has no just cause to complain. State v. Accor and State v. Moore, 281 N.C. 287, 188 S.E. 2d 332 (1972) ; State v. Rogers, 273 N.C. 208, 159 S.E. 2d 525 (1968) ; State v. Chase, 231 N.C. 589, 58 S.E. 2d 364 (1950). The…
North Carolina opinions such as State of North Carolina v. Commie Lester Bunton are cited where DUI penalties is disputed. The court stated: "If so, the error was favorable to defendant and he has no just cause to complain. State v. Accor and State v. Moore, 281 N.C. 287, 188 S.E. 2d 332 (1972) ; State v. Rogers, 273 N.C. 208, 159 S.E. 2d 525 (1968) ; State v. Chase, 231 N.C. 589, 58 S.E. 2d 364 (1950)." That is the language to brief; the rest of the decision supplies the procedural posture.
STATE OF NORTH CAROLINA v. CLAUDE O. McLAWHORN
STATE OF NORTH CAROLINA v. CLAUDE O. McLAWHORN, 43 N.C. App. 695 (1979)
…e case. Defendant had stipulated to previous convictions of driving under the influence and driving while license was revoked. This was done by defendant pursuant to G.S. 15A-928 because the offenses he stood charged with — driving under the influence, second offense, and driving while license revoked, fourth offense — were more severe because of the past convictions. The prior…
North Carolina opinions such as STATE OF NORTH CAROLINA v. CLAUDE O. McLAWHORN are cited where DUI penalties is disputed. The court stated: "Defendant had stipulated to previous convictions of driving under the influence and driving while license was revoked. This was done by defendant pursuant to G.S." That is the language to brief; the rest of the decision supplies the procedural posture.
Frequently asked questions
What is the legal BAC limit in North Carolina?
0.08% for adults; 0.04% for commercial drivers; zero-tolerance for drivers under 21
Is a first DUI a felony in North Carolina?
Habitual DWI (generally three priors) is a felony; DWI causing serious injury or death can also be a felony.
Will I need an ignition interlock device?
Ignition interlock is required for many AG-level and repeat DWI offenders as a condition of limited driving privilege.
This guide covers North Carolina impaired-driving law as of 2026. Sentencing grids, administrative DMV rules, and local diversion programs change — verify the live statute and speak with counsel about your charging document.