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What Is Auto Insurance?

Auto insurance is a contract between you and an insurance company that provides financial protection in the event of an accident, theft, or other covered loss involving your vehicle. In exchange for a monthly or annual premium, the insurer agrees to cover certain costs based on the policy you choose.

Beyond meeting any legal requirements in your state, the right policy can protect you from significant out-of-pocket costs after an accident, whether it's repairs to your own vehicle, damage to someone else's property, medical bills, or legal liability.

How Auto Insurance Works

An auto insurance policy is made up of several types of coverage, each designed to protect you in different scenarios. You pay a premium (typically monthly, every six months, or annually) to keep the policy active. If you file a claim, you're generally responsible for paying your deductible, and the insurer covers the remaining costs up to your policy limits.

Your premium is based on a mix of factors, including your driving history, age, location, vehicle make and model, credit-based insurance score (in most states), annual mileage, and the coverage levels you choose. Two drivers in the same zip code can pay very different rates based on these variables, which is why comparing quotes from multiple carriers is often the most effective way to find a competitive rate.

Most policies run in six-month or twelve-month terms. At renewal, your rate may change based on updates to your driving record, claims activity, credit profile, or broader market conditions in your state.

Types of Auto Insurance Coverage

Most policies combine several coverage types. Here are the most common:

  • Liability Coverage. Covers costs if you're at fault in an accident that injures someone else or damages their property. Most states require a minimum level of liability coverage.
  • Collision Coverage. Pays for damage to your own vehicle after a collision, regardless of who's at fault. Often required if you're financing or leasing your car.
  • Comprehensive Coverage. Covers damage to your vehicle from non-collision events like theft, vandalism, weather, or hitting an animal.
  • Uninsured/Underinsured Motorist Coverage. Protects you if you're hit by a driver who has no insurance or insufficient coverage. Required in some states.
  • Medical Payments or Personal Injury Protection (PIP). Helps cover medical expenses for you and your passengers after an accident, regardless of fault. PIP is required in no-fault states.
  • Gap Insurance. Covers the difference between what you owe on your car loan or lease and what your vehicle is worth if it's totaled. Usually relevant for newer vehicles or loans with low down payments.
What to Look For When Comparing Offers

Rate is important, but it isn't the only factor that matters when choosing a policy. Here are the key things worth evaluating:

  • Coverage Limits. The maximum amount your insurer will pay for a covered claim. Higher limits offer more protection but come with higher premiums. Make sure you're comparing policies with the same limits when evaluating price.
  • Deductibles. The amount you pay out of pocket before coverage kicks in. Higher deductibles typically mean lower premiums, but more cost to you at claim time.
  • Discounts. Many carriers offer discounts for bundling home and auto, insuring multiple vehicles, maintaining a clean driving record, being a homeowner, paying in full, or completing a defensive driving course. The available discounts can meaningfully change what you actually pay.
  • Financial Strength. A carrier's financial stability matters because it affects their ability to pay claims. Independent agencies like AM Best and Standard & Poor's rate insurers on their financial strength.
  • Customer Service and Claims Handling. How an insurer handles claims is often more important than the sticker price. Third-party reviews and industry studies can give you a sense of how a carrier performs when you actually need them.
  • Available Coverages and Add-Ons. Some carriers offer additional options like accident forgiveness, new car replacement, rideshare coverage, or roadside assistance. These may be relevant depending on how you use your vehicle.

Frequently Asked Questions

No. Auto insurance quotes use a soft inquiry, which does not impact your credit score. Insurers in most states use a credit-based insurance score as one factor in pricing, but checking a quote is different from applying for credit.
It's generally a good idea to compare quotes at least once a year, or whenever you have a major life change such as moving, buying a new vehicle, adding a driver to your policy, or seeing a meaningful change in your driving record. Rates and available discounts shift over time, and a policy that was competitive two years ago may not be today.
Common factors include your driving history, age, zip code, vehicle make and model, annual mileage, coverage levels, deductibles, and credit-based insurance score (in most states). Claims history and prior lapses in coverage can also affect your rate.
Liability-only policies cover damage and injuries you cause to others but do not cover damage to your own vehicle. Full coverage typically refers to a policy that includes liability, collision, and comprehensive coverage, offering broader protection for your own vehicle as well.
Yes. You can cancel your existing policy at any time, though some insurers charge a small cancellation fee. If you cancel before the end of your term, you're typically refunded the unused portion of your premium. Just make sure your new policy is active before canceling the old one to avoid a lapse in coverage.
A lapse in coverage can result in higher premiums when you restart a policy, potential fines or license suspension depending on your state, and in some cases, denial of future coverage. If your vehicle is financed or leased, a lapse may also violate your loan or lease agreement.
If you own a registered vehicle, most states require you to carry at least minimum liability insurance regardless of how often you drive. Some insurers offer usage-based or pay-per-mile policies for low-mileage drivers, which may be more cost-effective.
A deductible is the amount you pay out of pocket before your insurance covers the rest of a covered claim. Choosing a higher deductible typically lowers your premium but means more out-of-pocket cost at claim time. The right deductible depends on your budget and how much financial risk you're comfortable taking on.
Disclaimer:

Based on a 2025 Consumer Reports national survey of policyholders who switched auto insurance carriers. Median annual savings of $461 reported among those who switched. Actual savings vary by state, driving record, coverage level, and insurer.