What auto insurance covers and why you need it

Auto insurance is a contract between you and an insurance company: you pay a monthly or annual premium, and the company pays for damage or injuries if you cause an accident, or for damage to your own car depending on what type of coverage you buy. Every state except New Hampshire requires you to carry at least liability insurance, which pays for injuries or property damage you cause to someone else. Beyond that legal minimum, you can add coverage for your own vehicle and medical costs.

The reason you need it goes beyond the law. If you cause an accident and have no insurance, you are personally responsible for all costs — medical bills, vehicle repairs, lost wages. A single serious accident can cost hundreds of thousands of dollars. Insurance transfers that financial risk to the company in exchange for your premium.

For people over 50, auto insurance also becomes part of a larger financial picture: it affects your ability to drive independently, your liability if you cause harm, and sometimes your ability to get a loan or rent a home. Understanding what you are paying for helps you avoid overpaying for coverage you do not need and underpaying for coverage that protects your assets.

Key Takeaways

  • Liability insurance is required by law in all states except New Hampshire and pays for injuries or damage you cause to others, not your own vehicle.
  • Collision and comprehensive coverage protect your own car but are optional; they are usually required only if you have a loan or lease on the vehicle.
  • Deductibles (the amount you pay out of pocket before insurance kicks in) range from $250 to $1,000 or more, and choosing a higher deductible lowers your monthly premium.
  • Discounts for bundling home and auto insurance, maintaining a clean driving record, and completing a defensive driving course can reduce your premium by 10 to 25 percent.
  • Rates vary widely by insurer, location, age, and driving history, so comparing quotes from at least three companies takes 30 minutes and often saves hundreds per year.

The types of coverage and what each one pays for

Liability coverage is split into two parts: bodily injury liability (pays medical bills and lost wages for people you injure) and property damage liability (pays to repair or replace property you damage, like another person's car or a fence). Your state sets a minimum amount you must carry. In most states this is $25,000 per person and $50,000 per accident for bodily injury, and $25,000 for property damage, though these numbers vary. Many insurance agents recommend carrying higher limits — $100,000 per person and $300,000 per accident — because a serious injury can exceed the state minimum and leave you personally liable for the difference.

Collision coverage pays to repair or replace your own car if you hit another vehicle or object, regardless of who is at fault. It does not cover theft or weather damage. Collision coverage comes with a deductible: if your repair costs $5,000 and your deductible is $500, insurance pays $4,500 and you pay $500. If you have a car loan or lease, your lender usually requires you to carry collision coverage.

Comprehensive coverage pays for damage to your car from events other than collisions — theft, weather, vandalism, hitting an animal. Like collision, it comes with a deductible. If you own your car outright and it is older, you may decide the premium is not worth the payout; if you have a loan, your lender requires it.

Uninsured and underinsured motorist coverage protects you if you are hit by a driver who has no insurance or not enough insurance to cover your injuries. This coverage is required in most states and is often included automatically in your policy. It covers your medical bills and lost wages up to the limit you choose.

How insurance companies set your rate

Your premium is based on several factors that insurance companies use to predict the likelihood you will file a claim. Age and gender matter: drivers over 65 sometimes pay more because accident rates rise with age, though this varies by insurer and state. Driving history is weighted heavily — a clean record (no accidents or violations in the past three to five years) can save you 10 to 30 percent. Location affects rates because urban areas have more accidents and theft; moving from a city to a rural area can lower your premium. Type of vehicle matters: a car that is expensive to repair, has high theft rates, or lacks safety features costs more to insure. Annual mileage affects risk; if you drive less than 5,000 miles per year, some insurers offer low-mileage discounts.

Insurers also look at credit score in most states, based on the theory that financial responsibility correlates with driving responsibility. This is controversial and a few states prohibit it, but in most places a lower credit score raises your rate. Years of continuous coverage matter too; a gap in insurance (even a month) can raise your rate when you return.

One factor that does not affect your rate: your age alone if you are over 65. Federal law prohibits age-based discrimination in insurance, though some states allow it in limited ways. What does matter is whether you have had recent accidents or violations, and whether you have taken a defensive driving course (which can lower your rate by 5 to 10 percent in many states).

Discounts that can lower your premium

Most insurance companies offer discounts you have to ask for; they do not explore automatically. Multi-policy bundling — carrying auto and home insurance with the same company — typically saves 15 to 25 percent on auto insurance. Defensive driving course discounts explore if you complete an approved course (usually online, takes four to six hours, and costs $20 to $50); the discount lasts three years and then you can retake the course. Low-mileage discounts explore if you drive fewer than a set number of miles per year (often 5,000 to 7,500); some insurers now offer usage-based programs where they track your actual driving and adjust your rate monthly.

Good driver discounts explore if you have had no accidents or violations in a set period (usually three to five years). Paid-in-full discounts explore if you pay your annual premium upfront instead of monthly. Automatic payment discounts explore if you set up automatic bank transfers. Some insurers offer discounts for completing a safety course, installing anti-theft devices, or being a member of certain organizations (AARP members, for example, often receive discounts from specific insurers). Call your insurer and ask what discounts you may have access to for; the conversation takes 10 minutes and can save hundreds per year.

How to compare quotes and choose a policy

Insurance rates vary dramatically by company. The same driver with the same coverage might pay $800 per year with one insurer and $1,400 with another. To compare, you need to get quotes from at least three companies using the same coverage limits and deductibles. Most insurers offer free quotes online or by phone in 10 to 15 minutes. You will need your driver's license, vehicle identification number (VIN), and driving history.

When you get a quote, write down the coverage limits (liability, collision, comprehensive), the deductibles, and any discounts included. Then call or visit the websites of two or three other insurers and request the same coverage. After you have three quotes, compare the total annual cost, not just the monthly payment. A policy that costs $50 per month sounds cheaper than one that costs $55, but if the first requires a higher deductible or lower coverage limits, it may leave you underprotected.

Once you choose an insurer, ask about discounts again before you finalize the policy. Many companies will not mention discounts unless you ask. If you have been with the same insurer for several years, call them annually and ask if your rate has increased; if it has, get quotes from competitors and use them as leverage to negotiate a lower rate with your current company.

What happens if you cause an accident

If you cause an accident, the first step is to make sure everyone is safe and call 911 if anyone is injured. Then exchange contact information and insurance details with the other driver, take photos of the damage, and get the names and phone numbers of any witnesses. Do not admit fault or apologize for the accident; just exchange information.

Next, report the accident to your insurance company as soon as possible — most policies require you to report within 24 to 72 hours. Your insurer will assign an adjuster who will contact you, inspect the damage, and determine whether the claim is covered under your policy. If you are at fault, your liability coverage pays for the other driver's injuries and property damage (up to your coverage limits). If the other driver is at fault and has insurance, their liability coverage pays for your damage; if they have no insurance, your uninsured motorist coverage may help.

Your deductible applies only to collision and comprehensive claims on your own vehicle, not to liability claims. So if you cause an accident and your collision coverage pays $5,000 in repairs, you pay your deductible (say, $500) and insurance pays $4,500. If the other driver sues you for injuries and your liability coverage pays, you do not pay a deductible — the insurance company handles the entire claim.

Frequently Asked Questions

What is the minimum auto insurance I need by law?

Every state except New Hampshire requires liability insurance. The minimum amounts vary by state but typically range from $15,000 to $25,000 per person for bodily injury and $25,000 to $30,000 for property damage. Check your state's Department of Motor Vehicles website for the exact minimum. Many experts recommend carrying higher limits — at least $100,000 per person and $300,000 per accident — because a serious injury can exceed the state minimum and leave you personally liable.

Do I need collision and comprehensive coverage?

If you have a loan or lease on your car, your lender requires both. If you own your car outright, it is optional. The decision depends on the car's value and your ability to pay for repairs out of pocket. If your car is worth less than $5,000, the premium for collision and comprehensive may exceed what you would pay for repairs, so many owners skip it. If your car is worth $10,000 or more, the coverage usually makes financial sense.

Can I lower my premium by raising my deductible?

Yes. Raising your deductible from $250 to $500 or $1,000 lowers your monthly premium because you are agreeing to pay more out of pocket if you file a claim. The trade-off is that you need to have that money available if an accident happens. If you have an emergency fund and rarely file claims, a higher deductible saves money over time. If you live paycheck to paycheck, a lower deductible may be safer even if the premium is higher.

Why did my rate increase if I have not had an accident?

Rates increase for several reasons unrelated to your driving: your age (rates sometimes rise after 65), inflation and rising repair costs, changes in your location or commute, or straightforward that your insurer is raising rates across the board. Some insurers also increase rates if you have not shopped around in several years. Call your insurer and ask why your rate increased. If the reason is age or location, you may not be able to change it, but if it is a general rate increase, get quotes from competitors and use them to negotiate.

Does my auto insurance cover me if I am driving someone else's car?

Usually yes, but it depends on your policy. Most policies cover you when you drive a borrowed car occasionally, as long as you have permission. However, if you regularly borrow the same car or drive someone else's car for work, you should tell your insurer. Some policies exclude regular borrowed vehicles. If you frequently drive a family member's car, it is safer to have them add you as a named driver on their policy or to get your own policy that covers multiple vehicles.