Facing an impaired driving charge in Winnipeg is one of the most stressful situations you can encounter. The consequences are severe—licence suspension, criminal record, hefty fines, and potential jail time. But the good news is that impaired driving cases often have legal vulnerabilities that an experienced criminal defence lawyer can challenge.

At Theodore L. Mariash Law Office, Jason Malloy has defended hundreds of impaired driving cases across Manitoba. He knows exactly how to challenge the Crown’s evidence and protect your rights. Whether you failed a roadside breath test, refused a breathalyzer, or were arrested at a checkpoint, you need a lawyer who understands the science, the law, and the procedure.

What Is Impaired Driving?

Under the Criminal Code of Canada, impaired driving occurs when you operate a motor vehicle while your ability to do so is impaired by alcohol or a drug. The Crown doesn’t have to prove you were “extremely drunk”—they only need to show that your ability to operate a vehicle was impaired to any degree.

Manitoba and federal law recognize two main types of impaired offences: driving while impaired by alcohol or drugs, and exceeding the legal limit (80 mg per 100 mL of blood). Many people don’t realize these are different charges with different potential defences.

Potential Penalties

The penalties for impaired driving escalate with each conviction:

First offence:
Minimum $1,000 fine, 1-year driving prohibition, possible jail time up to 10 years, mandatory minimum licence suspension through MPI.

Second offence within 10 years:
Minimum 30 days jail, $1,500 fine, 2-year driving prohibition. A criminal record follows you forever.

Third offence within 10 years:
Minimum 120 days jail, $2,000 fine, 3-year driving prohibition.

Beyond criminal penalties, you also face provincial consequences. Manitoba Public Insurance (MPI) will suspend your licence—often immediately upon arrest. The Licence Suspension Appeal Board (LSAB) decides whether to reinstate your licence. Fighting your criminal charge is your best opportunity to also fight your licence suspension.

Additional consequences include losing your job, inability to cross the U.S. border, higher insurance premiums, and professional licensing issues.

Possible Defences to Impaired Driving Charges

The police must follow strict procedures when making a DUI arrest. Any deviation gives us grounds to challenge the evidence:

Faulty Roadside Screening Devices:
The Approved Screening Device must be properly certified and maintained. Missing maintenance records or incorrect operation can invalidate results.

Improper Breathalyzer Administration:
The operator must observe you for 15 minutes before the test, calibration must be certified, and the machine must have current certification. Procedural breaches can make readings inadmissible.

Charter Rights Violations:
Police must have reasonable grounds to demand a test and must read you your rights. If procedures weren’t followed, evidence can be excluded entirely.

Rising Blood Alcohol Defence:
Blood alcohol levels can rise for hours after drinking. If you had your last drink shortly before driving, your blood alcohol may have been lower while driving.

Medical Evidence:
Certain medical conditions, medications, and dental work can affect breathalyzer results. We work with toxicologists and medical experts to challenge the Crown’s evidence.

Why You Need a Criminal Defence Lawyer

A DUI conviction follows you for the rest of your life. It affects employment, travel, relationships, and your future. Police and the Crown expect you to be nervous and willing to accept whatever they offer.

An experienced impaired driving lawyer will:

• review all police notes and test results for procedural errors
• demand full disclosure of maintenance records and certifications
• challenge the Crown’s evidence in court
• negotiate the best possible outcome
• help with LSAB licence suspension appeals
• protect your rights at every stage

The Impaired Driving Legal Process in Manitoba

When you are arrested for impaired driving in Winnipeg, understanding the legal process ahead of you is critical. It begins at the roadside, where police officers may administer an Approved Screening Device (ASD) test. If you fail or refuse, you will be transported to the police station for a breathalyzer test on an Intoxilyzer or similar approved instrument. The officer must observe you for at least 15 minutes before administering the test, and the instrument must have current calibration certification.

Following your arrest, Manitoba Public Insurance (MPI) will immediately suspend your driver's licence under the Highway Traffic Act. This administrative suspension is separate from any criminal penalties and takes effect before you ever see a courtroom. You have the right to appeal this suspension to the Licence Suspension Appeal Board (LSAB) within 21 days of receiving notice. An experienced impaired driving lawyer will handle both the criminal charge and the LSAB appeal simultaneously to protect your driving privileges.

Your first court appearance is typically within a few weeks of your arrest. At this stage, your lawyer will receive disclosure — the full package of evidence the Crown intends to use against you. This includes police officer notes, breathalyzer maintenance logs, calibration certificates, video footage if available, and toxicology reports. A thorough review of disclosure often reveals the procedural errors and technical deficiencies that form the basis of a successful defence. Many impaired driving cases in Winnipeg are won or lost based on what is found in the disclosure package.

Drug-Impaired Driving in Manitoba

Since the legalization of cannabis in 2018, drug-impaired driving charges have become increasingly common in Manitoba. Under the Criminal Code, it is an offence to operate a motor vehicle while impaired by any drug, including prescription medications, cannabis, and illegal substances. The legal framework for drug-impaired driving differs significantly from alcohol-related charges, and the science behind drug impairment testing is far less reliable than breathalyzer technology.

Police officers who suspect drug impairment may request a Standardized Field Sobriety Test (SFST) at the roadside. If impairment is indicated, you may be taken to the station for evaluation by a Drug Recognition Expert (DRE). The DRE process involves a 12-step evaluation including eye examinations, divided attention tests, and vital sign measurements. Blood or urine samples may also be demanded. Each step of this process has strict procedural requirements, and errors by the officer or DRE can provide grounds for challenging the evidence in court.

Manitoba has introduced per se limits for THC blood concentration. Having between 2 and 5 nanograms of THC per millilitre of blood is a summary offence, while 5 nanograms or more carries the same penalties as alcohol-impaired driving. However, THC blood levels do not reliably correlate with actual impairment — THC can remain in your system for days or weeks after use. This creates significant defence opportunities that an experienced criminal lawyer can exploit.

Frequently Asked Questions About Impaired Driving Charges

What happens if I refuse a breathalyzer test in Manitoba?

Refusing to provide a breath sample is a separate criminal offence under Section 320.15 of the Criminal Code and carries the same penalties as impaired driving itself. This means a first-offence refusal results in a mandatory minimum $1,000 fine and a one-year driving prohibition. Many people mistakenly believe that refusing the breathalyzer will help their case, but in most situations it creates additional legal problems. However, there are limited circumstances where a refusal may be justified — for example, if you were not properly informed of the consequences or if the demand itself was unlawful. A criminal defence lawyer can evaluate whether a valid defence exists.

What are the penalties for a first-time DUI in Winnipeg?

A first-time impaired driving conviction in Manitoba carries a mandatory minimum fine of $1,000, a one-year federal driving prohibition, and a criminal record. Manitoba also imposes its own administrative penalties through MPI, including an immediate licence suspension, mandatory participation in the Ignition Interlock Program, and completion of the Addictions Foundation of Manitoba (AFM) assessment. You may also face increased insurance premiums for several years. For blood alcohol concentrations above 120 mg per 100 mL, the mandatory minimum fine increases to $1,500 and the driving prohibition extends to 18 months.

Can I keep my licence after being charged with impaired driving?

Possibly. While MPI will impose an immediate administrative suspension, you have the right to appeal to the Licence Suspension Appeal Board within 21 days. If the appeal is successful, your licence may be reinstated while the criminal case proceeds. Additionally, after serving a portion of your suspension, you may be eligible for the Ignition Interlock Program, which allows you to drive with a device installed in your vehicle that requires a breath sample before starting the engine. An experienced impaired driving lawyer can advise you on the best strategy for preserving your driving privileges throughout the legal process.

Take Action Today

An impaired driving charge is serious, but it’s not hopeless. Many charges are dismissed or reduced based on legal deficiencies in how the police conducted the investigation. A free consultation will tell you exactly what we can do for your case.

Call 204-784-3047 today for your free consultation. Jason Malloy is available 24/7 and ready to fight for you.