Fight a DUI in Massachusetts

Fight a DUI in Massachusetts2026-09-30T17:43:48-04:00

To fight a DUI in Massachusetts, the defense attacks the Commonwealth's proof at each step: the reason for the stop, the officer's observations and field sobriety tests, the breath test procedure, and the rights you had at the station. A first offense OUI under M.G.L. c. 90, § 24 carries a $500 to $5,000 fine and up to a year of license loss, and every OUI counts as a prior for life, so testing the evidence before accepting any deal matters. Rory Munns of Mass DUI Guy is licensed in Massachusetts and Rhode Island. Call 401-573-2265 for a free consultation.

Quick answer: You fight a Massachusetts OUI by challenging the evidence, usually through a motion to suppress and, if needed, a trial. Police need reasonable suspicion to stop you and probable cause to arrest you. Field sobriety tests are voluntary and often unreliable. Breath tests require two samples that agree within 0.02, a certified and maintained device, and a proper observation period. You have the right to a phone call after booking and to an independent test. When any of these fails, key evidence can be excluded and the case may be dismissed.

Want to know whether your OUI can be beaten? Rory Munns will review the report and video with you. Call 401-573-2265 for a free consultation, day or night.

Fight a DUI in Massachusetts

Fight a DUI in Massachusetts

Most people charged with OUI assume the breath test settles the case. It does not. The Commonwealth has to prove every element beyond a reasonable doubt, and it has to get its evidence in front of the judge or jury lawfully. A police report is written to support the arrest, and it rarely mentions the things that undercut it. The work of fighting a DUI is finding those things in the video, the records, and the law.

The first step

Get the evidence before you decide anything. That means the police report, the booking video, any cruiser or body camera footage, the dispatch recordings, and the breath test certification and maintenance records. Some of it is kept only for limited periods unless requested. It also means protecting your license: if you refused the breath test, you have 15 days to request an RMV hearing. Rory Munns starts on both the day you call.

Where OUI Cases Are Won

The stop

An officer needs reasonable suspicion of a traffic violation or crime to stop your car. A late-night drive, leaving a bar, or a minor drift within your lane is not always enough. If the stop was unlawful, everything the officer learned afterward, including the smell of alcohol, your statements, and the breath test, can be suppressed. Sobriety checkpoints are allowed, but they must follow written guidelines and a neutral plan. See our page on DUI checkpoints.

The officer's observations and roadside tests

Red eyes, slurred speech, and fumbling for a license are common in OUI reports, and they have innocent explanations: allergies, fatigue, nerves, contact lenses, a speech pattern. Field sobriety tests are voluntary in Massachusetts and were designed for flat, dry, well-lit surfaces. Given on a highway shoulder at night, in the cold, or to someone with a knee or back problem, they prove little. Video often shows a very different scene than the report describes.

The breath test

Massachusetts breath tests have strict requirements. The device must be certified and properly maintained. The operator must observe you for a period before the test to make sure nothing in your mouth skews the result. Two breath samples must be taken, and they must agree within 0.02 of each other. Medical conditions, such as reflux or diabetes, and the timing of the test can also matter. Because alcohol continues to absorb after your last drink, a reading taken at the station can be higher than your level when you were actually driving.

Your rights at the station

After booking, you have the right to use a telephone within a set time to call a lawyer, family member, or bail source. You also have the right to seek an independent test of your blood alcohol at your own expense. When police deny these rights, the remedy can include suppression of evidence or, in some cases, dismissal. Refusing the breath test brings an RMV suspension, but in Massachusetts the refusal itself generally cannot be used against you at trial.

7 Things to Know Before You Fight a DUI

  1. The Commonwealth carries the burden. You do not have to prove you were sober. The prosecution has to prove impairment or a 0.08 reading beyond a reasonable doubt.
  2. A motion to suppress comes first. Many cases are won before trial, when a judge excludes evidence from an unlawful stop or a flawed test.
  3. Video changes cases. Booking and cruiser video often contradict the written report.
  4. A refusal is not evidence of guilt. It brings an RMV suspension but generally cannot be mentioned at trial.
  5. You choose judge or jury. Massachusetts defendants can choose a jury trial or a bench trial before a judge.
  6. 24D is still available later. Fighting the case early does not usually take 24D off the table if the defense does not pan out.
  7. A win leaves no prior. A dismissal or not guilty verdict means no conviction and no prior offense for the future.

How Fighting an OUI Works in Court

  1. Arraignment. You plead not guilty, and release conditions are set.
  2. Discovery. Your lawyer obtains every report, video, and record the Commonwealth has.
  3. Motion to suppress. The defense challenges the stop, the arrest, the breath test, or statements, and the judge holds an evidentiary hearing.
  4. Negotiation. Strong motions often lead to dismissals or reductions before trial.
  5. Trial. If the case goes forward, a jury or judge hears the evidence, and the Commonwealth must prove every element beyond a reasonable doubt.
  6. License follow-up. A not guilty finding can also lead the court to restore a license suspended for refusal.

Why Hire Rory Munns

Rory Munns fights OUI charges in the District Courts of southeastern Massachusetts from his office in Fall River. He reviews every case for suppression issues, tells clients honestly when a defense is strong and when 24D is the better choice, and handles the RMV side of the license at the same time. He is licensed in Massachusetts and Rhode Island and answers the phone day and night. For more on the grounds that end cases, see our Massachusetts DUI dismissal page.

Related Reading

Ready to fight your OUI? Rory Munns offers a free consultation and is available 24/7. Call 401-573-2265.

Criminal Defense Attorney Rory Munns

161 S Main St
Fall River, MA 02721

Phone: 401-573-2265

Frequently Asked Questions

Can a Massachusetts breath test be wrong?

Yes. Breath test devices estimate blood alcohol from breath, and the result depends on the machine and the procedure. Massachusetts requires the device to be certified and properly maintained, the operator to observe you for a period before the test so nothing in your mouth affects it, and two samples to agree within 0.02. When those rules are not followed, the result can be challenged or excluded. Medical conditions, such as acid reflux or diabetes, can affect readings. Timing matters too: alcohol keeps absorbing after your last drink, so a reading at the station may be higher than your level while driving. The maintenance and calibration records should always be requested.

Can a Massachusetts breath test be wrong?2026-09-30T17:43:30-04:00

Can I fight an OUI if I refused the breath test?

Yes, and refusal cases are often easier to fight. Without a breath result, the Commonwealth has to prove impairment through the officer's observations, driving behavior, field sobriety tests, and any statements you made. In Massachusetts, the refusal itself generally cannot be used as evidence of guilt at trial, so the jury does not hear that you declined. The RMV refusal suspension is a separate matter: it runs for at least 180 days, and you have 15 days to request a hearing to challenge it. If you are found not guilty, the court can also order your license restored. A lawyer should address both the criminal case and the suspension right away.

Can I fight an OUI if I refused the breath test?2026-09-30T17:43:42-04:00

Did the police need a reason to pull me over for OUI?

Yes. An officer needs reasonable suspicion that a traffic violation or crime is occurring before stopping your car. Common reasons include speeding, a lane violation, a broken light, or erratic driving. A stop based on a hunch, on the time of night, or on leaving a bar is not enough by itself. Sobriety checkpoints are an exception, but they must be run under written guidelines with neutral criteria for which cars are stopped. If the stop was unlawful, the evidence gathered afterward, including observations, field sobriety tests, statements, and the breath test, can be suppressed. The cruiser video is often the best evidence of whether the stated reason for the stop holds up.

Did the police need a reason to pull me over for OUI?2026-09-30T17:43:34-04:00

Is it worth fighting a DUI in Massachusetts?

Often it is, and you will not know until the evidence has been reviewed. Every Massachusetts OUI, including a 24D disposition, counts as a prior offense for life, so avoiding one can matter for decades. Cases with a questionable stop, field sobriety tests given in poor conditions, a breath test with procedural problems, or no breath test at all are strong candidates for a fight. Fighting also does not usually take 24D off the table if the defense does not hold up. On the other hand, when the evidence is strong, a 24D may be the smarter result. The right answer comes from the report, the video, and the records, reviewed before your pretrial conference.

Is it worth fighting a DUI in Massachusetts?2026-09-30T17:43:25-04:00

Should I choose a jury or a judge for my OUI trial?

It depends on the case. In Massachusetts you can choose a jury trial or a bench trial before a judge. Juries sometimes respond well to common-sense defenses, such as innocent explanations for red eyes or unsteady footing, and to video that contradicts the report. A judge may be a better choice when the defense turns on technical legal issues, such as breath test procedures or the definition of operation, or when the facts might provoke a strong emotional reaction. Your lawyer can advise based on the evidence, the court, and experience with how similar cases have gone. The decision is ultimately yours, and it should be made after discovery is complete.

Should I choose a jury or a judge for my OUI trial?2026-09-30T17:43:39-04:00

What evidence should I gather to fight my OUI?

Start with your own memory: write down where you were, what you ate and drank and when, how long after the stop you were tested, and anything the officer said. Save receipts, texts, and photos from the evening, and note the names of anyone who was with you. Your lawyer will request the police report, booking video, cruiser and body camera footage, dispatch recordings, and the breath test certification and maintenance records, some of which are kept only for limited periods. Medical records can matter if you have a condition that affects balance, speech, or breath results. The sooner this is collected, the better the chance of finding the details that win cases.

What evidence should I gather to fight my OUI?2026-09-30T17:43:45-04:00

What is a motion to suppress in an OUI case?

A motion to suppress asks the judge to exclude evidence that was obtained unlawfully. In OUI cases, common targets are an unlawful stop without reasonable suspicion, an arrest without probable cause, statements taken in violation of your rights, and breath test results that did not follow the required procedures. The judge holds an evidentiary hearing, usually with the arresting officer testifying and the video in evidence. If the motion is granted, the Commonwealth cannot use that evidence at trial. When the excluded evidence is central, such as the breath test or everything after the stop, the case is often dismissed. Many OUI cases are won at this stage rather than at trial.

What is a motion to suppress in an OUI case?2026-09-30T17:43:27-04:00

What rights do I have at the police station after an OUI arrest?

You have the right to remain silent and to ask for a lawyer. Massachusetts law also gives you the right to use a telephone after booking, within a set time, to call a lawyer, family member, or someone to arrange bail. You have the right to seek an independent test of your blood alcohol at your own expense, and the police must inform you of that right. You can refuse the breath test, though refusal brings an RMV suspension. When police deny the phone call or interfere with an independent test, the remedy can include suppression of evidence or, in some cases, dismissal. The booking video often shows whether these rights were honored.

What rights do I have at the police station after an OUI arrest?2026-09-30T17:43:36-04:00
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