Can You Be Charged With DUI Without Evidence? ARS 28-1381

Can You Be Charged With DUI Without Evidence in Arizona?

You can be charged with a DUI in Arizona without a breath or blood test, and it happens every day. What the State cannot do is convict you without evidence. The confusion comes from what “evidence” means. Arizona’s DUI statute, A.R.S. § 28-1381(A)(1), makes it a crime to drive or be in actual physical control of a vehicle while “impaired to the slightest degree” by alcohol or drugs. That charge needs no number at all. The officer’s observations, driving behavior, field sobriety tests, admissions, odor, bloodshot eyes, and body-camera video are all evidence, and a prosecutor can file on them alone. The per se charges under (A)(2) (0.08 or more) and the extreme-DUI tiers under A.R.S. § 28-1382 do require a chemical result, which is why a case with no test is charged only as an impairment DUI.

So the accurate answer has three parts: no test does not mean no charge; no test means no per se or extreme count; and a charge built entirely on observations is the kind of DUI case that is most open to challenge, because every piece of it depends on the credibility and method of one officer.

What an Observation-Only DUI Case Looks Like

A no-test DUI is built from four sources, each with its own weaknesses:

• The driving. Weaving within a lane, a wide turn, or slow reaction at a light. Much of what officers describe as impaired driving is also ordinary driving, and the dash-camera video often shows less than the report describes.
• The contact. Odor of alcohol, bloodshot or watery eyes, slurred speech, fumbling for documents. These are the standard phrases of every DUI report, and they are subjective, unquantified, and consistent with fatigue, allergies, nerves, or nothing.
• Field sobriety tests. The walk-and-turn, one-leg stand, and horizontal gaze nystagmus are standardized tests with scoring rules; deviations in how they were administered, the surface, the lighting, footwear, weight, age, and injuries all bear on whether the “clues” mean anything. Our field sobriety test guide covers each one.
• Statements. “Two beers” is the classic DUI admission, and it is evidence. So is anything said after arrest, which is one reason to stop talking.

In a no-test case the State also has to prove the impairment was caused by alcohol or a drug, not just that the driving was poor, and it has to prove driving or actual physical control, which is its own contested element when the person was found parked or asleep.

Refusing the Test Does Not Make It a No-Evidence Case

Arizona’s implied consent law, A.R.S. § 28-1321, means a licensed driver has already agreed to a breath, blood, or urine test on a lawful DUI arrest. Refusing carries a 12-month administrative suspension and, under A.R.S. § 28-1388(D), the refusal itself is admissible at trial, where the prosecutor argues consciousness of guilt. Officers respond to a refusal by obtaining a telephonic search warrant for a blood draw, so the case ends up with a chemical result anyway, drawn later than a consensual test would have been. See what happens when you refuse a breath test.

How a DUI Without a Test Is Defended

• The stop. Without reasonable suspicion for the stop, everything after it is suppressed, and in a no-test case that is the entire prosecution.
• The video. Body and dash camera footage is compared against the report, line by line. Where the video shows steady speech, normal balance, and compliant behavior, the report’s adjectives lose their weight.
• The field sobriety tests. Administration, scoring, conditions, and the officer’s training records are all discoverable, and a test given wrong proves nothing.
• Causation and control. Medical conditions, fatigue, and the absence of any chemical result all go to whether impairment by alcohol or drugs was proven; and where the person was not driving, actual physical control is litigated on its own.
• Reasonable doubt at trial. Impairment-only cases are well suited to a jury trial precisely because the State’s proof is one officer’s opinion, and jurors are entitled to disagree with it.

How Tamou Law Group Defends DUI Cases Without a Test

We obtain every recording first, because in a no-test case the video is the evidence, and we measure the report against it. The stop, the field sobriety tests, and the officer’s training are litigated through suppression and evidentiary motions, and medical causation is developed where the facts support it. These are the DUI cases we are most willing to try, and the State knows which firms try them. Members of the National College for DUI Defense, in every Maricopa County court.

Related guides: top defenses to DUI charges, Arizona field sobriety tests, refusing a breath test in Arizona, and our Arizona DUI charges hub. Call 623-321-4699, 24/7.