In Maine, operating a vehicle while under the influence (OUI) is illegal. Although OUI is the OUI terminology for drunk driving, people sometimes use DUI ("driving under the influence.") The penalties for a conviction depend primarily on the number of prior convictions.
This article covers Maine's OUI laws, including how the offense is defined and the penalties a driver might face for a first, second, or third OUI conviction.
Maine prohibits operating or attempting to operate a motor vehicle while:
(Me. Rev. Stat. tit. 29-A, §§ 2401, 2411 (2025).)
In other words, an OUI conviction can be based on BAC or actual impairment. An OUI based on BAC is called a "per se OUI."
Drivers are considered "under the influence" if their mental or physical faculties are, to any extent, impaired by alcohol, drugs, or other intoxicants. The court will look at evidence that shows impairment, such as the defendant's:
(State v. Atkins, 129 A.3d 952 (Me. 2015); State v. Melanson, 804 A.2d 394 (Me. 2015).)
"Operating" or "attempting to operate" a vehicle doesn't require actual movement. An impaired motorist who intends to drive the vehicle and takes a substantial step toward doing so can be convicted of an OUI. (Me. Rev. Stat. tit. 29-A, § 2401 (2025); State v. Belhumeur, 128 A.3d 646 (Me. 2015).)
The possible jail, fines, and license-related penalties for an OUI conviction depend on the number of prior OUI convictions the driver has. Other factors, such as a high BAC, can increase the penalties for a conviction.
Generally, only prior convictions within the last 10 years count for sentencing purposes (often called a "washout" period). (Me. Rev. Stat. tit. 29-A, § 2411 (2025).)
The sentencing judge often will place a driver on probation and can suspend all or part of the incarceration term. However, the court can't suspend mandatory minimum sentences. (Me. Rev. Stat. tit. 17-A, § 1605 (2025).)
A first OUI conviction is a misdemeanor (Class D crime) and generally carries:
(Me. Rev. Stat. tit. 29-A, § 2411, tit. 17-A, §§ 1604, 1704 (2025).)
A first-offense OUI requires a mandatory 48 hours in jail if the driver had a BAC of .15% or more, attempted to elude law enforcement, was speeding 30 miles per hour or more over the posted limit, or had a passenger younger than 21. (Me. Rev. Stat. tit. 29-A, § 2411 (2025).)
A second OUI conviction is a misdemeanor (Class D crime) and generally carries:
(Me. Rev. Stat. tit. 29-A, § 2411, tit. 17-A, §§ 1604, 1704 (2025).)
For a second OUI offense involving an unlawful refusal to take a blood, breath, or urine test, the minimum jail time is 12 days and the minimum fine is $900. (Me. Rev. Stat. tit. 29-A, § 2411 (2025).)
A third OUI conviction is a felony (Class C crime) and generally carries:
(Me. Rev. Stat. tit. 29-A, § 2411, tit. 17-A, §§ 1604, 1704 (2025).)
For a third OUI offense involving an unlawful refusal to take a blood, breath, or urine test, the minimum jail time is 40 days and the minimum fine is $1,400. (Me. Rev. Stat. tit. 29-A, § 2411 (2025).)
A driver with a second or subsequent OUI conviction must complete an alcohol and drug program. (Me. Rev. Stat. tit. 29-A, § 2411 (2025).)
A driver who had a passenger younger than 21 in the vehicle will face a 48-hour mandatory minimum jail sentence for a first OUI. Committing an OUI with a passenger younger than 21 also carries an additional 275-day license suspension. This 275-day suspension is tacked onto other suspensions received by the driver and applies to all OUIs—whether it's a first or subsequent offense. (Me. Rev. Stat. tit. 29-A, § 2411 (2025).)
An OUI that involves serious bodily injury or death will result in increased penalties. A serious bodily injury OUI is a class C crime, which carries six months to five years in jail, $2,100 to $5,000 in fines, and a six-year driver's license suspension. (Me. Rev. Stat. tit. 29-A, § 2411, tit. 17-A, §§ 1604, 1704 (2025).)
A fatality OUI is a class B crime and will result in 6 months to 10 years in jail, $2,100 to $20,000 in fines, and a 10-year driver's license suspension. A fatality or injury OUI conviction stays on a driver's record forever and will increase the penalties for future OUI convictions. (Me. Rev. Stat. tit. 29-A, § 2411, tit. 17-A, §§ 1604, 1704 (2025).)
Drivers who have their license suspended for an OUI offense generally are eligible for early reinstatement and a restricted license. To obtain the restricted license, the driver must install an ignition interlock device (IID), petition to the Secretary of State for reinstatement, and complete the following requirements:
(Me. Rev. Stat. tit. 29-A, § 2508 (2025).)
A work-related hardship or restricted license may also be available for a first-offense OUI-related suspension. (Me. Rev. Stat. tit. 29-A, § 2503 (2025).)
Drivers who are younger than 21 are prohibited from having any measurable amount of alcohol in their system while operating a vehicle. (Me. Rev. Stat. tit. 29-A, § 2472 (2025).)
A violation carries a one-year suspension for a first offense and a two-year suspension for a second offense. Underage offenders who were transporting at least 1 passenger younger than 21 at the time of the offense will receive an additional 180 days of suspension time. (Me. Rev. Stat. tit. 29-A, § 2472 (2025).)
These underage OUI suspensions are separate from any consequences that might result from an underage driver being found guilty of an OUI for having a BAC of .08% or being "under the influence" (as defined above).
If you've been arrested for driving under the influence, you should seek legal assistance. A qualified OUI attorney can review your case and help you decide on the best course of action.