Drinking and driving in Puerto Rico is illegal at a blood alcohol content of 0.08% or higher if you are 21 or older, with a much stricter 0.02% limit for drivers aged 18 to 20 and for anyone operating a truck, motorcycle, school bus, heavy vehicle, all-terrain vehicle, or government vehicle. Penalties start with a fine and a short license suspension for a first offense and climb quickly with repeat convictions. A few rules on the island work differently from what mainland drivers expect, especially around refusing a breath test.
Blood Alcohol Limits by Driver
Puerto Rico sets four thresholds:
- Drivers 21 and older: 0.08%.
- Drivers 18 to 20: 0.02%. The same limit applies at any age to anyone driving a truck, motorcycle, school bus, heavy motor vehicle, or all-terrain vehicle.
- Drivers under 18: zero tolerance. Any detectable alcohol is illegal.
- Public employees in Commonwealth-owned vehicles: 0.02%.
The same law that sets these limits also prohibits driving under the influence of narcotics, marijuana, stimulants, depressants, or any other controlled substance, and the penalty tiers for drug-impaired driving track those for alcohol.
Why the Drinking Age Trips Up Visitors
Puerto Rico’s legal drinking age is 18, three years younger than on the mainland. Someone between 18 and 20 can legally buy and drink alcohol on the island but still faces the 0.02% BAC limit behind the wheel. At that level, a single drink can be enough to break the law. Younger tourists used to a 21 drinking age at home sometimes miss how narrow the driving margin is once they can legally order a beer.
Penalties for a First DUI
A first conviction is a misdemeanor. It carries:
- A fine of $300 to $500, plus $50 for every 0.01% your BAC exceeded the limit.
- License suspension of up to 30 days.
- Mandatory attendance at a certified orientation program run by the Department of Transportation together with the Mental Health and Anti-Addiction Services Administration.
- Restitution for any damage or injury caused.
Failing to comply with the sentence or the rehabilitation conditions can bring 5 to 15 days in jail. After a stop, the officer issues a summons for a probable cause hearing and takes the driver to the nearest station, where you stay until your BAC drops below the limit or you are no longer impaired.
Penalties for Repeat Offenses
A second conviction brings a fine of $500 to $750 (plus the same $50-per-hundredth surcharge), 15 to 30 days of jail, and a one-year license suspension. A court may impose a combined sentence that includes a 45-day full driving ban followed by a restricted license conditioned on installing an ignition interlock device, permitted only for work, school, or treatment. Mandatory alcohol screening, at least 30 days of community service, and restitution also apply.
A third or later conviction carries a fine of $2,000 to $2,500, 60 days to six months in jail, at least 60 days of community service, and indefinite license suspension. Even a third DUI remains a misdemeanor under Puerto Rico law rather than a felony, though the penalties by that point make the classification largely symbolic.
Vehicle Seizure
Starting with a second conviction, the court must order the vehicle seized if two conditions are met: it is registered in your name, and your prior conviction happened within five years of the new one.
Driving Impaired With a Child or Pregnant Passenger
If a child 15 or younger or a pregnant woman was in the vehicle, the driver gets an additional $500 fine, the same BAC surcharge, and a mandatory 48 hours of jail on top of the underlying sentence.
Causing Injury While Impaired
If impaired driving hurts someone, the offense stays a misdemeanor but the penalties climb sharply: a fine of $1,000 to $5,000, mandatory restitution, and a license suspension of one to five years. These consequences run separately from the DUI penalties themselves, so a driver can face both.
Chemical Testing and What Happens If You Refuse
Driving on public roads in Puerto Rico counts as consent to chemical testing of blood, breath, or other bodily fluids when an officer has reasonable grounds to suspect impairment. An officer can also require a preliminary breath test at the roadside.
Refusal works differently than on the mainland. Most U.S. states impose an automatic administrative license suspension for refusing a breathalyzer. Puerto Rico does not. If you refuse, resist, or try to evade testing, the officer arrests you and takes you to a hospital, where certified medical staff draw blood. Refusing does not prevent the test; it changes where and how it happens. Once your BAC is confirmed below the limit or you are otherwise fit to drive, you are released. If you still appear impaired, you remain at the station until you sober up.
Refusal itself is admissible as evidence in court, but there is no separate criminal charge or administrative suspension attached to it. The practical cost of refusing is the arrest and the hospital blood draw.
Open Containers
Any open container of an alcoholic beverage above 0.5% alcohol by volume is banned from the passenger area of a vehicle on a public road, for drivers and passengers alike. The fine is $100. Containers stored in the trunk or another area not readily accessible to occupants are fine, and buses, limousines, and motor homes are exempt for their passenger or living areas. If you are carrying alcohol you have bought, keep it sealed and in the trunk.
Sobriety Checkpoints
Puerto Rico allows sobriety checkpoints, and police use them, especially around holidays and weekends. Officers can ask drivers to take a preliminary breath test and look for signs of impairment. Implied consent applies at checkpoints just as it does at a traffic stop.
If You Have a Mainland License
A DUI conviction in Puerto Rico results in a suspension of your driving privileges within the territory even if your license was issued by a U.S. state. For a driver who was not licensed in Puerto Rico at the time of the offense, the law bars the Secretary of Transportation from issuing a Puerto Rico license for a period equal to whatever suspension would have applied.
Puerto Rico is not a member of the Driver License Compact, the interstate agreement most U.S. states use to share DUI conviction data. A Puerto Rico DUI may therefore not appear automatically on your home-state driving record. That is not a guarantee it stays hidden. Background checks, federal databases, and other channels can still surface the conviction, and whether your home state acts on it depends on that state’s own policies and how far it looks into out-of-jurisdiction offenses.