What to Do When Hit by an Uninsured or Underinsured Driver in Arizona: A Complete Recovery Guide

Current as of: September 14, 2026 Car Accidents & Collisions Arizona
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In Arizona, dealing with an uninsured driver means relying on your UM/UIM policy. State law requires minimum liability limits of $25,000 for injury under A.R.S. § 28-4009, so having the right strategy is crucial to covering your medical costs.

Getting into a car crash in Phoenix, Tucson, or Mesa is stressful, but discovering the at-fault driver has no insurance adds a heavy financial burden. Arizona has thousands of uninsured motorists on its highways. Understanding your rights and the legal avenues available in the state is crucial to covering your medical bills and property damage. If you need local representation, you can find experienced legal help in our USA Lawyers Directory.

What to Do If the At-Fault Driver Only Has AZ's Minimum 25/50/15 Liability Limits

Under A.R.S. § 28-4009, Arizona drivers must carry minimum liability insurance of $25,000 per person for bodily injury, $50,000 per accident for bodily injury, and $15,000 for property damage. If a driver only carries these minimum limits, it is often not enough to cover severe injuries. This is where Underinsured Motorist (UIM) coverage becomes vital. If your damages exceed the at-fault driver's $25,000 limit, your UIM policy can help cover the difference.

Step-by-Step Process in Arizona

Stacking UM/UIM Coverages in Multi-Car Households

If you live in a multi-car household, you might wonder if you can "stack" your UM/UIM coverages. Stacking means if you have three cars insured with $25,000 in UM coverage each, you combine them for a total of $75,000. However, Arizona law allows insurance companies to write anti-stacking language into their policies under A.R.S. § 20-259.01. You must carefully review your policy declaration page to see if your carrier permits stacking in your situation.

Handling Hit-and-Run 'Ghost Vehicles' Where the Driver Is Never Found

When a driver flees the scene and is never identified, they are treated legally as an uninsured motorist. To successfully file a UM claim for a "ghost vehicle" hit-and-run, you generally must report the crash to law enforcement, such as the Phoenix Police Department, Phoenix, within 24 to 48 hours. Independent corroboration, such as dashcam footage or objective witness statements, is highly recommended because insurance adjusters rigorously review these claims.

The Process of Suing an Uninsured Driver Personally (Wage Garnishment/Asset Seizure)

If you do not have UM coverage, you might choose to file a lawsuit directly against the uninsured driver. You would file your civil complaint in the local court, such as the Maricopa County Superior Court, Phoenix or Pima County Superior Court, Tucson. If you obtain a judgment, you can attempt to enforce it through wage garnishment by filing a Form AOCCVGE2F, Arizona, Administrative Office of the Courts, Writ of Garnishment and Summons (Earnings). However, Arizona enforces strict judgment debtor protections under A.R.S. § 33-1131, which caps wage garnishment at only 10% of disposable earnings (or the amount exceeding 60 times the highest applicable minimum wage), fully exempting lower-income earners. Furthermore, debtors can protect up to $5,000 in bank deposits under A.R.S. § 33-1126 and at least $400,000 in primary residence equity under the homestead exemption in A.R.S. § 33-1101, making personal collection exceptionally difficult unless the defendant owns substantial non-exempt assets.

Pure Comparative Negligence in Arizona

Arizona follows a pure comparative negligence system under A.R.S. § 12-2505. This means you may still recover damages even if you are partially at fault for the crash. If a jury finds you 10% responsible for the accident, your financial recovery is reduced by exactly 10%. Insurance companies know this and may try to shift blame onto you. Proper evidence gathering is essential to protect your claim.

How Much Does it Cost in Arizona?

Pursuing a claim involves various potential costs. Depending on your path, expenses might include:

  • Court Filing Fees: The basic civil filing fee in an Arizona Superior Court is approximately $320 to $350.
  • Service of Process: Hiring a process server generally costs between $50 and $100.
  • Attorney Fees: Most auto accident lawyers from our directory work on a contingency fee, typically 33% to 40% of your settlement, meaning you pay no upfront legal fees.

How Long Does the Process Take?

An average UM/UIM claim handled smoothly through your own insurance might take 3 to 6 months to resolve once you have finished medical treatment. However, if you choose to take an uninsured driver to court, the civil litigation timeline in Arizona can easily stretch from 1 to 2 years, depending on court backlogs and the complexity of the case.

Frequently Asked Questions (FAQ)

Is UM/UIM coverage legally required in Arizona?

No, UM and UIM coverages are not mandatory. However, insurance companies are required by state law to offer them, and you must sign a written waiver if you decline.

Can my insurance rates go up for filing a UM claim?

Generally, Arizona law restricts insurance companies from raising your premiums if you were not at fault for the accident, even if you utilize your own UM coverage.

What is the statute of limitations for filing a lawsuit?

The deadline depends on who you are pursuing. To sue the at-fault driver personally, you have a two-year statute of limitations under A.R.S. § 12-542. For Underinsured Motorist (UIM) claims governed by A.R.S. § 12-555, you must provide written notice to your insurer within three years of the crash, and initiate arbitration or litigation within three years of that notice, as confirmed in State Farm Mut. Auto. Ins. Co. v. Frank, 257 Ariz. 255 (AZ Court of Appeals 2024). For Uninsured Motorist (UM) claims, Arizona treats the action as a breach of a written insurance contract, subject to a six-year limitations period under A.R.S. § 12-548 unless shortened by your policy.

Do I need to go to court for a UM claim?

Most UM claims are settled out of court directly with your insurance adjuster. Formal litigation is usually a last resort if negotiations fail.


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