Can You Refuse a Breathalyzer Test in Arizona?

Yes, you can refuse a breathalyzer test in Arizona, but under the state's implied consent law (A.R.S. § 28-1321), refusing the test after a DUI arrest triggers an automatic 12-month driver's license suspension, and officers will usually just get a telephonic warrant for a blood draw anyway. The answer also depends on which test you are being asked to take, because the roadside test and the station test are legally very different things.

We defend DUI cases across Arizona, and the breathalyzer question comes up in nearly every consultation. Here is a plain-English breakdown of your actual options at each stage of a stop, and what each choice costs.

The Two Different Tests, and Why It Matters

People say breathalyzer like it is one thing. At a DUI stop there are usually two:

• The roadside portable breath test (PBT), offered before arrest, along with field sobriety tests like the walk-and-turn. For most adult drivers these roadside exercises are voluntary, and declining them, politely, does not by itself trigger the implied consent penalties.
• The evidentiary test after arrest, on a station breath machine or by blood draw. This is the one covered by Arizona's implied consent law. Refusing it has automatic, serious consequences even if you are never convicted of anything.

That distinction is the heart of the question. Declining roadside exercises limits the evidence collected before arrest. Refusing the post-arrest test puts your license on the line immediately. Our DUI defense practice sees the fallout from confusing the two constantly.

What Refusing the Breathalyzer Actually Costs in Arizona

Refuse the post-arrest test and the state moves against your license on the spot: a 12-month suspension for a first refusal, and 24 months if you have refused before within 84 months. That suspension is a civil penalty, separate from the criminal DUI case, and it applies even if the DUI charge is later reduced or dismissed. Meanwhile, officers in most Arizona jurisdictions can reach a judge by phone at 2 a.m. and have a blood warrant signed in minutes. So a refusal often buys you the license suspension and the state still gets its evidence. Prosecutors can also tell the jury you refused and argue it shows consciousness of guilt.

A Composite Example From Real Cases

Here is a scenario we see in some form again and again, with details generalized to protect privacy. A driver is stopped leaving a Scottsdale entertainment district, declines the roadside tests, is arrested, and then, rattled, refuses the station test too. A telephonic warrant is issued, blood is drawn within the hour, and he now faces both the DUI case and a 12-month refusal suspension that exists no matter how the criminal case ends. There were real defense issues in his stop worth litigating, but the refusal suspension ran on its own separate track the whole time. Every case is different, and past results do not guarantee future outcomes, but the pattern is the lesson: the refusal often adds a penalty without subtracting any evidence.

The Honest Counterpoint: Refusal Is Not Automatically Irrational

Some defense lawyers will tell you flatly to always take the test, and we think honesty requires more nuance. A breath result above 0.15 exposes you to Extreme DUI penalties, and above 0.20 to Super Extreme penalties, so what the number is matters enormously. A refusal case can leave the state litigating a warrant, a blood chain of custody, and a delayed draw instead of waving a printout at the jury. But make no mistake about the trade: the 12-month suspension is nearly automatic, a warrant blood draw usually happens anyway, and the refusal itself becomes evidence. There is no one-size answer, which is exactly why the time to talk to a lawyer is immediately, and you have the right to ask for one.

Stopped or Arrested for DUI? Call Before You Guess

So, can you refuse a breathalyzer test in Arizona? Yes, and sometimes people do, but the implied consent consequences are automatic, fast, and separate from your criminal case, so the decision deserves real legal advice, not gas station folklore. Your Phoenix Attorney defends DUI and criminal cases statewide, with decades of experience, free consultations, transparent flat fees, payment plans, and bilingual Spanish service. A real attorney answers 24/7 at 623-335-4014, including from the roadside. And if your stop involved a vehicle search, read our guide on whether you have to let police search your car in Arizona.

This article is for general information only and is not legal advice. Every case turns on its specific facts. Speak with a licensed Arizona attorney about your situation.