What Most People Get Wrong About Minimum Coverage
The instinct: the state set a minimum, so the minimum must be a reasonable amount of protection. It is the legal requirement, it is what the lowest-priced policies quote, and it feels like a considered judgment about what a driver needs.
What's actually true: a legal minimum is a floor for participation, not an assessment of adequacy — and Arizona's has not moved with vehicle prices. $15,000 of property damage coverage against an average new vehicle price above $45,000 is not a small gap, it is a gap larger than the coverage itself. And because Arizona is an at-fault state, the limit caps what your insurer pays, not what you owe.
What to do instead: stop treating the minimum as a recommendation and price the alternative before dismissing it. The economics of liability coverage work in your favour here: the first layer is the expensive part, so moving well above the floor usually costs far less per dollar of protection than the coverage you already have.
Arizona's minimum auto liability limits are 25/50/15, and a great many drivers in this state carry exactly that — often without ever having decided to. It is what the lowest quote defaults to, it satisfies the registration requirement, and nobody sends a letter explaining what it does not do. So here is the plain version: what those three numbers actually mean, what happens on the day they run out, and why the alternative is usually much cheaper than people assume.
- The floor
- 25/50/15ARS 28-4009
- Property damage
- $15,000Per accident, total
- Average new car
- $45,000+Three times the limit
- Above the limit
- You owe itArizona is at-fault
What does Arizona actually require?
Short answer25/50/15 under ARS 28-4009 — and nothing else at all.
Three numbers, and it is worth being precise about what each one is:
$25,000 of bodily injury liability per person — the most your policy pays for any one injured person's medical costs and related damages.
$50,000 of bodily injury liability per accident — the total across everyone injured, no matter how many people that is.
$15,000 of property damage liability per accident — the total for every vehicle and every piece of property you damage.
That is the entire legal requirement. Note what is absent: no coverage whatsoever for your own vehicle, no medical payments coverage for you or your passengers, and no uninsured motorist coverage unless you add it. A minimum-limits policy is designed to make you financially responsible to other people, not to protect you.
Note too that these limits are per accident, not per vehicle you hit. One collision involving three cars shares the same $15,000.
What does $15,000 of property damage actually cover?
Short answerOften less than one vehicle — the limit hasn't kept pace with what cars cost.
This is the number that has aged worst, and the arithmetic is uncomfortable.
Work through an ordinary Tucson scenario. You misjudge a light on Broadway and hit a three-year-old SUV. It is declared a total loss at $38,000. Your policy pays $15,000. You owe $23,000, personally, before anyone has mentioned an injury.
Now add a second vehicle pushed into the intersection, or a wall, or a light pole. The same $15,000 is spread across all of it. The limit does not expand because the accident got bigger.
And modern vehicles have made this worse in a way that is easy to miss: sensors, cameras and radar units now sit inside bumpers, mirrors and windshields, so repairs that were once genuinely minor routinely run into four figures. The gap between the legal minimum and a real repair bill has widened from both directions at once.
| An at-fault collision with… | Typical total loss value | What you'd owe personally |
|---|---|---|
| An older economy car | Under $15,000 | Possibly nothing |
| A three-year-old SUV | Around $38,000 | Roughly $23,000 |
| A new full-size truck | $60,000 and up | $45,000 and up |
| Two vehicles at once | Combined | Everything above $15,000 |
The pattern is uncomfortable but simple: the minimum was adequate for a vehicle fleet that no longer exists. Nothing about the limit has changed while the average price of the thing you might hit has climbed past three times that figure.
What happens when the limits run out?
Short answerYou do. Arizona is an at-fault state, and the limit caps your insurer, not you.
This is the point that matters more than any other on this page, and it is the one most minimum-limits drivers have never had explained.
Arizona is an at-fault state. The driver who causes a crash is responsible for the resulting damage. Your insurance is the mechanism you have chosen to meet that responsibility — it is not the boundary of it. When your policy limit is reached, your insurer stops paying and the obligation does not.
What follows is a sequence worth understanding:
The injured party can pursue you directly for the shortfall — wages, savings, and other assets are potentially exposed.
A civil judgment may be entered if the matter goes to court and you cannot pay.
Your license can be suspended. Arizona's Motor Vehicle Division can suspend driving privileges over an unpaid judgment arising from a crash, and reinstatement requires satisfying the judgment and filing future proof of financial responsibility — the filing Arizona calls Future Financial Responsibility, commonly known as an SR-22.
So an underinsured at-fault accident can cost you the money and the license, and then make your next several years of insurance more expensive on top. That is a long tail from one intersection.
How much do higher limits actually cost?
Short answerMuch less than people assume — the expensive part of liability coverage is the first layer, not the last.
Here is the piece of insurance economics that genuinely surprises people, and it works in your favour.
Most claims are small. That means the first layer of liability coverage — the initial dollars, the ones that pay for fender benders and minor injuries — gets used constantly, and carries most of the cost of the coverage. The layers above it are used far less often, because catastrophic accidents are rarer than ordinary ones.
So the price does not scale with the limit. Doubling your liability limits does not double your liability premium; it typically adds a modest amount, because you are buying coverage that is statistically less likely to be needed. The protection roughly doubles while the price moves a fraction as much.
There is a second reason the gap is smaller than expected. A driver who buys higher limits is, statistically, a somewhat different driver than one who buys the floor — and carriers price that too. The result is that the step up frequently costs less than a straightforward reading of the numbers would suggest.
The practical instruction is simple: get the actual quoted difference before deciding you cannot afford it. Most drivers carrying minimum limits have never seen the number for the tier above, and assume it is proportional. It isn't. And if the total premium is genuinely the constraint, there are better places to find savings than the coverage that stands between an accident and your assets.
Does the minimum protect your own car?
Short answerNot by a single dollar.
Liability coverage is money your insurer pays to other people. It has no application to your own vehicle at all. On a minimum-limits policy in Arizona, your car is uninsured.
The coverages that protect your vehicle are separate purchases:
Collision pays to repair or replace your car after a crash, regardless of fault.
Comprehensive pays for the non-collision events — theft, fire, vandalism, animal strikes, and in Southern Arizona the seasonal reality of hail, wind-driven debris and flying gravel through monsoon season.
That comprehensive point deserves weight locally. Monsoon storms damage a lot of parked vehicles every summer in Tucson, and that is precisely the loss a minimum-limits policy pays nothing toward. There is also no medical payments coverage for you or your passengers, and no uninsured motorist coverage — which in this state is its own serious gap.
What should an Arizona driver actually carry?
Short answerLiability well above the floor, uninsured motorist coverage, and an umbrella if you have assets.
Liability limits sized to real accident costs, not to the statutory floor. Look hard at the property damage limit in particular, because it is the one most likely to be exhausted in an ordinary collision.
Uninsured and underinsured motorist coverage. Arizona insurers are required by ARS 20-259.01 to make this coverage available and to offer it in writing, and the statute contemplates offering it at limits not less than the liability limits in your policy. It is not mandatory to buy — but in a state with one of the highest uninsured driver rates in the country it answers the accident you have no control over. Covered in full in uninsured motorist coverage in Arizona.
Comprehensive and collision if losing your vehicle would be a genuine financial problem, which for most households it would.
An umbrella policy if you have assets, equity or income worth protecting. It sits above both your auto and home liability limits and is generally inexpensive for the amount of protection it adds.
One last practical note: if you drive south, none of this follows you. A US auto policy is not valid in Mexico, which is a separate purchase entirely — see driving to Mexico.
The Bottom Line
Arizona's 25/50/15 minimum is a legal floor for participating in traffic, not a considered judgment about what protects a household. The property damage limit in particular has fallen badly out of step with what vehicles cost — $15,000 of coverage against an average new vehicle price above $45,000 means one ordinary at-fault collision can exhaust it before anyone is hurt. And because Arizona is an at-fault state, the limit caps what your insurer pays, not what you owe.
The good news is that this is one of the least expensive problems in insurance to fix. The first layer of liability coverage is the expensive one; the layers above it cost far less per dollar of protection. Most drivers carrying the minimum have simply never seen the quoted difference. Raquel Jimenez Insurance in Tucson will price it for you across our markets and show you what real limits actually cost. Call (520) 889-5766.
Related Questions Arizona Drivers Ask
What is the minimum car insurance required in Arizona?
Under ARS 28-4009, Arizona requires 25/50/15: $25,000 of bodily injury liability per person, $50,000 of bodily injury liability per accident, and $15,000 of property damage liability per accident. That is the legal floor to register and operate a vehicle. It includes no coverage at all for your own vehicle, no medical payments coverage, and no uninsured motorist coverage unless you separately choose to add them.
Is $15,000 of property damage coverage enough in Arizona?
Rarely. Average new vehicle transaction prices now exceed $45,000, so a single at-fault collision with a late-model SUV or truck can exhaust $15,000 before anyone is injured. If more than one vehicle is involved, that limit is shared across all of the property damage from the accident. Because Arizona is an at-fault state, anything above your limit is owed by you personally.
What happens if I cause an accident that costs more than my limits?
Your insurer pays up to the policy limit and the remainder becomes your personal responsibility. The injured party can pursue you directly, and if a civil judgment is entered and goes unpaid, the Arizona Motor Vehicle Division can suspend your driver license until the judgment is satisfied and future proof of financial responsibility is filed. Minimum limits do not cap your liability, they only cap what your insurer pays.
How much more do higher liability limits cost?
Usually far less than drivers expect, because the first dollars of coverage are the most expensive to provide. Most claims are small, so the initial layer of liability coverage absorbs the majority of claim activity and carries most of the cost. Additional limits above that layer are used far less often and are priced accordingly. The practical result is that moving well above 25/50/15 typically costs a fraction of what doubling the coverage might suggest.
Does minimum coverage pay for my own car?
No. Liability coverage pays for injuries and damage you cause to other people and their property. It pays nothing toward repairing or replacing your own vehicle. That requires collision coverage for crash damage and comprehensive coverage for theft, fire, hail, monsoon debris and animal strikes. A minimum-limits policy leaves your own vehicle entirely uninsured.
Last reviewed by Raquel Jimenez on July 26, 2026. Arizona's 25/50/15 minimum liability limits are set by ARS 28-4009; the requirement that insurers make available and offer uninsured and underinsured motorist coverage in writing is ARS 20-259.01. Judgment-related suspension and future proof of financial responsibility requirements reflect Arizona Department of Transportation Motor Vehicle Division guidance. Average new vehicle transaction pricing reflects 2026 industry data. This is general information, not legal advice, and not a substitute for advice on your specific policy.