Car Insurance Guide: Coverage Types, State Minimums, Costs, Claims and How to Save

Quick answer: car insurance is a contract that pays for damage and injuries you cause to others (liability), and, if you buy the optional parts, for damage to your own car (collision and comprehensive), your own medical bills (medical payments or personal injury protection) and losses caused by drivers with too little or no insurance (uninsured and underinsured motorist coverage). Nearly every state requires a minimum amount of liability coverage, but state minimums are low compared with the cost of a serious crash, so many drivers choose higher limits. Your premium depends on your driving record, the car, where you live, how much you drive, the coverage and deductibles you choose and, in most states, your credit-based insurance score.

Car insurance is one of the few bills almost every driver has to pay, yet most people only read their policy after something goes wrong. That is a problem, because the choices you make at purchase, such as your liability limits and deductibles, decide how much help you get when you need it.

In this guide

What Car Insurance Is and What Your State Requires
Car Insurance Coverage Types in Plain English
How Much Car Insurance Coverage Is Enough
What Sets Your Car Insurance Premium
How to Compare Car Insurance Quotes
Car Insurance Discounts and Telematics Programs
How Car Insurance Claims Work, Step by Step
Special Situations: SR-22, Lapses, New Drivers and Rentals
How to Switch Car Insurance Without a Lapse
When to Review Your Car Insurance
Common Car Insurance Mistakes to Avoid
Frequently Asked Questions
Frequently Asked Questions
Related Car Insurance Guides

This guide walks through the full picture: what each part of an auto policy does, what your state requires, how to decide how much coverage is enough, what sets the price, how to shop, how claims work and how to switch companies safely. Each section links to a deeper article on this site where one exists.

This is general educational information, not legal or financial advice, and Pro Insurance Info is not an insurance company. Coverage rules, required minimums and prices vary by state and insurer, so read your policy and check your state insurance department for current requirements. Sources: National Association of Insurance Commissioners (NAIC) auto insurance consumer guides; Insurance Information Institute (III); Insurance Institute for Highway Safety (IIHS); Insurance Research Council (IRC); state insurance department and motor vehicle agency guidance. Checked October 2026. Questions: hello@proinsuranceinfo.com.

Table of Contents

What Car Insurance Is and What Your State Requires

Car insurance transfers some of the financial risk of driving from you to an insurer. You pay a premium for a policy period, usually six or twelve months, and the insurer agrees to pay covered losses up to the limits you chose, minus any deductible.

Almost every state makes some auto insurance mandatory. The core requirement is liability coverage, which pays for injuries and property damage you cause to other people. States set the minimum amounts, and many add other required coverages such as personal injury protection (PIP) or uninsured motorist coverage. New Hampshire is the best-known exception: most drivers there are not required to buy a policy, but they must still be able to pay for damage they cause, and drivers with certain violations must carry insurance. Virginia once allowed drivers to pay an uninsured motor vehicle fee instead of buying insurance, but that option ended on July 1, 2024, according to the Virginia Department of Motor Vehicles.

State minimums are usually written as three numbers, such as 25/50/25. That means $25,000 of bodily injury coverage per person, $50,000 of bodily injury coverage per accident and $25,000 of property damage coverage per accident. Some examples of how much the minimums differ:

State	Minimum liability (as published by the state)	Other required coverage
California	30/60/15 (raised from 15/30/5 on January 1, 2025)	None beyond liability
Florida	No bodily injury liability required for most drivers; $10,000 property damage	$10,000 personal injury protection
New York	25/50/10, with higher limits for death	Personal injury protection and uninsured motorist coverage
Texas	30/60/25	PIP must be offered and rejected in writing

Minimums change, so confirm the current figures on your state insurance department or motor vehicle agency website before you buy. Our explainer on the types of auto insurance coverage shows how each required piece works.

What Happens If You Drive Without Insurance

Penalties vary by state but can include fines, license or registration suspension, vehicle impoundment and a requirement to file proof of future financial responsibility, often called an SR-22, for several years. You would also be personally responsible for any damage you cause. Some states use electronic insurance verification systems that flag a lapse automatically, so the consequences can arrive even if you never get pulled over.

Car Insurance Coverage Types in Plain English

A standard personal auto policy is a bundle of separate coverages, each with its own limit and, for some, its own deductible. The NAIC and the Insurance Information Institute describe the main parts this way:

Coverage	What it pays for	Usually required?
Bodily injury liability	Injuries you cause to other people, including legal defense	Yes, in nearly every state
Property damage liability	Damage you cause to other people’s cars and property	Yes, in nearly every state
Collision	Damage to your car from hitting another car or object, or rolling over, regardless of fault	No, but lenders and leasing companies require it
Comprehensive	Theft, vandalism, fire, flood, hail, falling objects and animal strikes	No, but lenders and leasing companies require it
Uninsured/underinsured motorist	Your injuries, and in some states car damage, when the at-fault driver has no or too little insurance	Required in some states
Personal injury protection (PIP)	Medical bills and some lost income for you and your passengers, regardless of fault	Required in no-fault states
Medical payments (MedPay)	Medical bills for you and your passengers, regardless of fault	Optional where offered

Optional add-ons include rental reimbursement, roadside assistance, gap insurance for financed cars and coverage for custom equipment. “Full coverage” is not an official term; people usually mean liability plus collision and comprehensive.

For a closer look at the two coverages that protect your own car, see comprehensive vs. collision coverage. Our guide to uninsured and underinsured motorist coverage explains why that protection matters: the Insurance Research Council has estimated that roughly one in seven U.S. drivers is uninsured.

What Car Insurance Usually Does Not Cover

Personal auto policies generally exclude normal wear and tear, mechanical breakdowns, intentional damage and, in many cases, driving for pay through a delivery or rideshare app unless you add an endorsement. Our article on what car insurance does not cover lists the common exclusions.

How Much Car Insurance Coverage Is Enough

Enough coverage is the amount that would keep a serious crash from becoming a personal financial crisis. State minimums meet the legal requirement, but they were not designed around today’s medical and repair costs. A multi-car crash with injuries can produce bills well beyond $25,000 per person, and if the damages you cause exceed your limits, you can be sued for the difference.

A practical way to decide:

Start with liability. Many consumer guides, including the Insurance Information Institute’s, suggest considering at least $100,000 per person and $300,000 per accident for bodily injury. Drivers with significant savings, home equity or income to protect often go higher, and may add an umbrella policy.
Match uninsured and underinsured motorist limits to your liability limits where your state allows it, since this coverage protects you and your passengers.
Decide on collision and comprehensive based on your car’s value and whether you could replace it from savings. Lenders require both on financed or leased cars.
Pick deductibles you could pay tomorrow. A higher deductible lowers your premium, but only if you could actually cover it after a claim.
Consider medical coverage (MedPay or PIP) in light of your health insurance deductible.

Our guide to umbrella insurance explains when an extra layer of liability coverage makes sense. Umbrella insurers usually require you to carry certain underlying auto limits first.

What Sets Your Car Insurance Premium

Insurers price auto policies on how likely you are to file a claim and how expensive claims are likely to be. The common rating factors, as described by the NAIC and state regulators, include:

Driving record: at-fault accidents, speeding tickets and DUIs raise rates, often for three to five years.
Location: ZIP code matters because theft, crash frequency, repair costs and lawsuit rates vary by area.
The vehicle: repair costs, safety ratings, theft rates and the cost of parts such as sensors and cameras.
How much you drive: annual mileage and whether you commute.
Age and driving experience: young drivers pay the most because they crash more often.
Coverage choices: higher limits and lower deductibles cost more.
Credit-based insurance score: used in most states, though California, Hawaii, Massachusetts and Michigan ban or sharply limit its use for auto rates.
Insurance history: a gap in coverage can raise your price.

Some states restrict other factors as well, such as gender, marital status or occupation, so the list differs depending on where you live. For more on how premiums are built, read what determines your insurance premium, and see how your deductible trades off against price in deductible vs. premium.

Why Rates Have Risen in Recent Years

Repair bills have climbed as cars carry more sensors, cameras and electronics, and replacement parts and labor cost more than they did a few years ago. Medical costs and the size of injury settlements also feed into premiums. Insurers must file rates with state regulators, and in many states rate increases need approval, but the underlying cost trends affect almost every company.

How to Compare Car Insurance Quotes

Comparing quotes only works if every quote prices the same coverage. Prices for the same driver can vary widely from one company to the next, which is why regulators such as the NAIC encourage shopping around.

Use this checklist when you compare:

Write down your current coverage from your declarations page: each limit, each deductible and every add-on.
Request identical limits and deductibles from each insurer, then look at changes separately.
List every driver and vehicle accurately. Leaving out a household driver can lead to a denied claim or a cancelled policy.
Disclose tickets and accidents honestly. Insurers check motor vehicle records and claims databases, and the quote will change if the information is wrong.
Ask which discounts were applied and what happens to the price at renewal.
Check the company, including its financial strength rating and complaint record. The NAIC’s Consumer Insurance Search tool shows complaint information, and your state insurance department can confirm the company is licensed.
Look beyond price. Claims service, repair shop networks and how the company handles total losses matter when you actually need the policy.

You can get quotes directly from insurers, through captive agents who represent one company, or through independent agents who compare several companies. Our auto insurance premium calculator gives a rough estimate before you start.

Car Insurance Discounts and Telematics Programs

Discounts can take a meaningful amount off a premium, but they vary by company and state. The most widely offered include:

Multi-policy (bundling) with homeowners or renters insurance.
Multi-car when several vehicles share one policy.
Safe driver or claims-free after a period without accidents or violations. California’s Proposition 103 requires insurers to give qualifying good drivers a discount of at least 20 percent.
Good student for young drivers with strong grades, often a B average or better.
Defensive driving course completion, which some states require insurers to recognize for older drivers.
Vehicle safety and anti-theft features.
Paid-in-full, automatic payment and paperless billing.
Affiliation discounts through employers, alumni groups or professional associations.

Usage-Based and Telematics Insurance

Telematics programs track how you drive through a phone app or a plug-in device. Insurers typically look at mileage, hard braking, rapid acceleration, speed, time of day and phone use. Safe drivers can earn a discount, and pay-per-mile programs charge a base rate plus a per-mile rate, which can suit people who drive little. Some programs can also raise your price if the data shows risky driving, so read the terms before you enroll. The NAIC notes that consumers should understand what data is collected, how long it is kept and how it is used.

How Car Insurance Claims Work, Step by Step

A claim is your request for the insurer to pay a covered loss. The basic sequence is similar at most companies:

Make sure everyone is safe and call 911 if anyone is hurt or the road is blocked.
Exchange information with the other driver: names, phone numbers, insurance companies, policy numbers, plate numbers and vehicle descriptions.
Document the scene with photos of all vehicles, the road, signs and any injuries, and get witness contact details.
Get a police report number if officers respond; many states require a report when there are injuries or damage above a set amount.
Notify your insurer promptly, even if you think the other driver was at fault. Policies require prompt notice.
Work with the adjuster, who reviews coverage, decides fault under your state’s rules and estimates damage.
Get repairs or a settlement. You pay your deductible on your own collision or comprehensive claims; if another driver’s insurer accepts fault, you may not owe one.

If your car is a total loss, the insurer generally pays its actual cash value, which is its market value just before the loss, minus your deductible. If you still owe more than that on a loan, gap insurance covers the difference. Read how car insurance claims work for more detail and what an auto insurance adjuster does before your first conversation with one.

Fault Rules Differ by State

About a dozen states use a no-fault system, in which your own PIP coverage pays your medical bills first regardless of who caused the crash, and you can sue the other driver only for serious injuries that meet a legal threshold. The rest are at-fault states, where the driver who caused the crash, through their liability insurance, pays for the other party’s losses. States also differ on how shared fault reduces what you can collect.

Special Situations: SR-22, Lapses, New Drivers and Rentals

Some situations need extra attention because they change your price or your eligibility.

SR-22 or FR-44 filings: After a DUI, driving uninsured or certain other violations, a state may require your insurer to file a certificate proving you carry insurance, usually for about three years. If the policy lapses, the insurer notifies the state.
Coverage lapses: Even a short gap can raise your rate and may trigger penalties from your motor vehicle agency. The safest approach is to keep continuous coverage, including when you sell a car or move.
New and teen drivers: Adding a teen to a parent’s policy usually costs less than a separate policy, and permit holders are often covered under the household policy, though insurers want to be told. The IIHS reports that, per mile driven, drivers ages 16 to 19 are nearly three times as likely as drivers 20 and older to be in a fatal crash, which is why their premiums are high. Tell your insurer as soon as a teen in the household gets a learner permit.
Rental cars: Your personal policy’s liability coverage often extends to a rental car in the U.S., and collision and comprehensive may extend if you carry them. Many credit cards add secondary rental car coverage. Check both before you buy the rental counter’s damage waiver.
Delivery and rideshare driving: Most personal policies exclude driving for pay. Ask about a rideshare or delivery endorsement before you start.
Moving to a new state: You generally need a policy that meets your new state’s requirements, and you may need to register the car there within a set period.

How to Switch Car Insurance Without a Lapse

Switching is simple as long as the new policy starts before the old one ends. Follow this order:

Buy the new policy first and choose a start date.
Confirm you have new proof of insurance, such as ID cards in the insurer’s app.
Cancel the old policy effective the same day the new one begins, in writing or through the insurer’s process. Do not simply stop paying, because a cancellation for nonpayment can show up on your insurance history.
Ask about your refund. Most insurers refund unused premium; some charge a cancellation fee.
Update your lender or leasing company, which must be listed on the new policy as loss payee.
Check your state’s rules. In states that track coverage electronically, a mismatch in dates can trigger a notice.

Switching at renewal avoids fees, but you can switch at any time. If you have an open claim, it usually stays with the insurer that covered the date of the loss.

When to Review Your Car Insurance

Review your policy at least once a year and whenever your life changes. Good moments include:

Renewal, when your price may change even if nothing else did.
Buying, selling or paying off a car. Once a loan is paid off, you can decide whether to keep collision and comprehensive.
Adding or removing a driver, including a teen getting a permit or a child moving out with no car.
Moving, even within the same state.
Changing how much you drive, such as switching to remote work.
A ticket or accident dropping off your record, usually after three to five years, which may lower your price at another company.
A big change in your finances, which may call for higher liability limits.

How to Read Your Declarations Page

Your declarations page, often called the dec page, is the summary at the front of your policy. It lists the policy period, named insureds, listed drivers, covered vehicles, each coverage with its limit and deductible, discounts and the premium. Keep a copy handy, because it is the single most useful document when you compare quotes or file a claim.

Common Car Insurance Mistakes to Avoid

Buying only the state minimum when you have savings or a home that a lawsuit could reach.
Choosing a deductible you cannot afford to save a few dollars a month.
Dropping uninsured motorist coverage, which protects you when the other driver cannot pay.
Leaving out a household driver or misstating where the car is kept.
Letting coverage lapse between cars or during a move.
Keeping collision on a low-value car when the premium plus deductible approaches what the car is worth.
Not shopping for years. Prices for the same driver vary between insurers and change over time.
Using a personal policy for delivery or rideshare work without the right endorsement.

Frequently Asked Questions

What is the minimum car insurance I need?

It depends on your state. Most states require liability coverage, written as three limits such as 25/50/25, and some also require personal injury protection or uninsured motorist coverage. Check your state insurance department for current minimums.

What does full coverage car insurance mean?

It is not an official term. Most people use it to mean liability plus collision and comprehensive. It does not mean everything is covered, and it does not include wear and tear or mechanical breakdowns.

Does car insurance follow the car or the driver?

In general, insurance follows the car. If you lend your car to a friend with permission, your policy is usually primary, and the friend’s own policy may apply as excess coverage. Rules vary by state and policy.

How long does an accident stay on my insurance?

Many insurers apply surcharges for three to five years after an at-fault accident, depending on the company and state rules.

Is it cheaper to pay car insurance monthly or all at once?

Paying the full six- or twelve-month premium up front is often cheaper because many insurers offer a paid-in-full discount and some charge installment fees.

Will my rates go up if I file a claim that was not my fault?

It depends on the insurer and your state. Some states limit surcharges for not-at-fault accidents. Comprehensive claims, such as hail damage, usually affect rates less than at-fault collisions.

Related Car Insurance Guides - section banner for Car Insurance Guide

Work through these articles for more detail on each part of your policy:

More guides in this series, covering how much coverage to buy, liability limits, telematics, tickets and accidents, no-fault states, switching insurers and teen drivers, are being added and will be linked here as they go live.

Sources: NAIC auto insurance consumer guides and Consumer Insurance Search; Insurance Information Institute auto insurance resources; Insurance Institute for Highway Safety teenager fatality facts; Insurance Research Council uninsured motorist studies; California Department of Insurance; Florida Office of Insurance Regulation; New York Department of Financial Services; Texas Department of Insurance; Virginia Department of Motor Vehicles; New Hampshire Department of Safety.