North Carolina DWI Laws: Penalties, BAC & License (2026)

In North Carolina the offense is called driving while impaired (DWI), and General Statute 20-138.1 makes it unlawful to drive with a blood alcohol concentration (BAC) of 0.08 percent or more, or while appreciably impaired by any substance. A first DWI is a misdemeanor sentenced under one of five levels in G.S. 20-179, with a one-year license revocation through the North Carolina DMV.

This guide is part of our DUI Laws by State series.

What counts as a DWI in North Carolina

North Carolina charges the offense as driving while impaired under G.S. 20-138.1. A person commits DWI by driving on any highway, street, or public vehicular area while under the influence of an impairing substance, with a BAC of 0.08 percent or more at any relevant time after driving, or with any amount of a Schedule I controlled substance in the blood or urine. Because the impairment prong does not require a specific number, a driver under 0.08 can still be convicted if appreciably impaired. Commercial drivers face a 0.04 percent limit under G.S. 20-138.2, and drivers under 21 fall under a zero-tolerance rule in G.S. 20-138.3 that bars driving after consuming any alcohol. The 0.08 figure is the federal benchmark adopted by every state except Utah, which uses 0.05 percent, as the National Highway Traffic Safety Administration describes.

First-offense DWI penalties in North Carolina (jail, fines, suspension)

A DWI is a misdemeanor, but North Carolina does not use a single first-offense penalty. Instead, G.S. 20-179 directs the judge to weigh grossly aggravating, aggravating, and mitigating factors and assign one of five sentencing levels. A first offender with no grossly aggravating factors typically lands at Level Five, Four, or Three. Level Five carries a fine of up to $200 and a jail term of 24 hours to 60 days, much of which the court can suspend. Level Four carries a fine of up to $500 and 48 hours to 120 days. Level Three carries a fine of up to $1,000 and 72 hours to six months. Two more severe levels, Level Two and Level One, apply when grossly aggravating factors are present, and a separate Aggravated Level One applies when three or more grossly aggravating factors exist. A first DWI conviction also revokes the driver license for one year through the North Carolina DMV.

Watch out: The DMV license revocation runs separately from the criminal sentencing. You can be sentenced at the lowest level and still lose your license for a full year, and a refusal of the chemical test adds its own one-year revocation on top.

Ignition interlock requirements in North Carolina

North Carolina ties the ignition interlock device (IID) to license restoration rather than to the conviction itself. Under G.S. 20-17.8, a driver must install an interlock to get the license back when the original offense involved a BAC of 0.15 percent or more, when there was a prior impaired-driving conviction within seven years, or after a habitual or repeat revocation. The interlock requirement lasts one year when the original revocation was one year, three years when it was four years, and seven years when the revocation was permanent. The device prohibits driving with an alcohol concentration above 0.02 percent, requires a breath sample before the engine starts and at random points during a trip, and reports every attempt to start the vehicle over the limit to the DMV. A first offender under 0.15 percent with no priors generally is not required to use an interlock.

License revocation and the administrative process in North Carolina

North Carolina imposes two license actions. First, under G.S. 20-16.5, an officer immediately revokes the license for 30 days when the driver fails the chemical test at 0.08 percent or more, or refuses it, through a civil revocation that happens before any conviction. Second, on conviction, the DMV imposes a one-year revocation for a first DWI under G.S. 20-17. Many first offenders can apply for a limited driving privilege under G.S. 20-179.3 that allows driving for work, school, and household duties, often conditioned on an interlock. To restore the license after the revocation, a driver must pay restoration fees, complete a substance-abuse assessment and any recommended treatment under G.S. 20-17.6, and install an interlock if required. Repeat and high-BAC cases carry longer revocations of four years or permanent.

Repeat offenses and the North Carolina look-back period

North Carolina uses different look-back windows depending on the issue. For sentencing, a prior DWI conviction within seven years before the current offense is a grossly aggravating factor under G.S. 20-179 that pushes the driver into the harsher Level Two or Level One. For the felony charge, the window is 10 years: under G.S. 20-138.5, a driver who commits DWI after three or more prior impaired-driving convictions within 10 years commits habitual impaired driving, a Class F felony. That charge carries a mandatory minimum active term of 12 months that cannot be suspended and a permanent license revocation. The felony threshold is therefore the fourth offense within 10 years. Separately, driving impaired and causing serious injury (felony serious injury by vehicle) or death (felony death by vehicle, or second-degree murder in egregious cases) is a felony regardless of offense number.

Watch out: Refusing the chemical test does not protect your license. A willful refusal triggers a separate one-year revocation under G.S. 20-16.2, longer than the 30-day civil revocation for failing the test, and the refusal can be used as evidence in the DWI case.

Refusing a breath or blood test in North Carolina

North Carolina's implied consent law, G.S. 20-16.2, provides that anyone who drives on a highway or public vehicular area has consented to a chemical analysis if charged with an implied-consent offense. Before testing, the officer must inform the driver that refusing means a one-year license revocation. A willful refusal results in that one-year DMV revocation, which is independent of the criminal case and applies even if the DWI charge is later reduced or dismissed. After six months of the refusal revocation, a driver may petition a hearing officer for restoration in some circumstances. Failing the test instead produces the 30-day civil revocation under G.S. 20-16.5. Because the refusal revocation is longer, refusing usually makes the license consequences worse, and officers may obtain a warrant to draw blood.

Can you expunge or seal a DWI in North Carolina

North Carolina law does not allow a DWI conviction to be expunged. The general misdemeanor expunction statutes, including G.S. 15A-145, expressly exclude any offense involving impaired driving as defined in G.S. 20-4.01(24a). That means a DWI conviction stays on the criminal record permanently and continues to count as a prior for the seven-year and 10-year enhancement windows. An expunction is available only when the DWI charge did not end in a conviction, such as a dismissal or a finding of not guilty, in which case the dismissed charge may be expunged under G.S. 15A-146. Because the conviction itself cannot be cleared, the license and record consequences of a North Carolina DWI are long lasting.

What to do after a DWI arrest in North Carolina

A North Carolina DWI generates parallel proceedings: a criminal case in district court and license actions through the DMV, including the immediate 30-day civil revocation and, if you refused testing, a one-year refusal revocation. The deadlines are short, so many people promptly gather the citation, the revocation notices, and any test results, and consider applying for a limited driving privilege if eligible. The criminal case proceeds through first appearance, pretrial, and trial or plea. General information cannot tell you how your case will come out, because the result turns on the specific facts, the evidence, and the sentencing factors in G.S. 20-179. Many people consult a licensed North Carolina DWI attorney to understand the sentencing level exposure, the interlock and refusal rules, and the options for both the criminal case and the license case.