At Best Sydney Criminal Lawyers, we often field urgent calls from drivers who have been charged because they decided to Refuse Breath Test Sydney. Many drivers mistakenly believe that refusing the test will prevent a drink driving charge, not realising that the refusal itself is a serious criminal offence.
Understanding the legal implications of “Failing to Submit to Breath Analysis” is crucial. This guide explores the consequences and your legal defence options.

What Are Breath Tests in Sydney?
Types of Breath Tests
NSW Police use two distinct procedures:
- Roadside Breath Test (Alcolizer): A preliminary test using a handheld device to detect the presence of alcohol.
- Breath Analysis (BAS): If the roadside test is positive, you are arrested and taken to a police station (or bus) for a more accurate reading. This result is the one used in court.
Police Powers and “Refuse Breath Analysis”
Police have broad powers to request a test if they suspect you have been driving. It is an offence to Refuse Breath Test Sydney or fail to supply a sufficient sample (e.g., not blowing hard enough). Officers do not need to prove you were drunk—only that you refused their direction.
Legal Blood Alcohol Limits
- 0.05: Full licence holders.
- 0.02: Heavy vehicle and taxi drivers.
- 0.00: Learner and Provisional (P1/P2) drivers.
What Happens If You Refuse a Breath Test?
The law treats a refusal as equivalent to the highest category of drink driving. The courts view it as an attempt to hide your intoxication level.

Immediate Consequences
If you refuse, you will be arrested and charged with “Fail/Refuse Breath Analysis”. Police generally issue an immediate suspension notice, meaning you cannot drive home from the station.
Penalties for Refusal
The penalties are severe and include:
- Criminal Conviction: A permanent record affecting employment and travel.
- Fines: Up to $3,300 for a first offence ($5,500 for second offence).
- Disqualification: Automatic 3 years disqualification (reducible to 12 months).
- Imprisonment: Up to 18 months jail.
- Interlock: Mandatory participation in the Alcohol Interlock Program.
What Are Your Rights During a Breath Test?
Valid Reasons to Refuse
While you generally must comply, there are limited legal defences for a Refuse Breath Test Sydney charge:
- Medical Grounds: If you have a respiratory condition (like severe asthma) that physically prevents you from providing a sufficient sample. You must provide medical evidence to support this.
- The “Home Safe” Rule: Police generally cannot require a breath test if you are at your usual place of abode.
- Time Limit: Police cannot require a test more than 2 hours after you were driving.
The Importance of Legal Advice
Do not try to argue with the police on the roadside. If you have refused a test, contact Best Sydney Criminal Lawyers immediately. We can review the police body-worn video to see if the police followed the correct procedure or if a defence applies.

Final Thoughts
A charge of Refuse Breath Test Sydney is not an automatic guilty verdict. Procedural errors by police are common. Our specialist team fights these charges daily in Sydney courts.
If you are facing a refusal charge, you need expert representation to save your licence. Contact Best Sydney Criminal Lawyers today for a case assessment.