Written by licensed insurance agent Andy walker
Reviewed by the Alias Insurance editorial team.
Your car insurance premium is based on the risk an insurer expects to take on when it covers you, your vehicle, and the drivers listed on your policy. The National Association of Insurance Commissioners says common rating factors include location, age, gender, marital status, driving experience, driving record, claims history, credit history, prior insurance, vehicle type, vehicle use, annual mileage, and the coverage and deductibles you choose. State law decides which factors an insurer may use.
The company you choose matters too. Insurers use different approved rating plans, claim data, discounts, and pricing rules. The same driver can therefore receive different quotes for similar coverage.
Current national data shows why reviewing these factors matters. The NAIC reported that the national combined average premium per issued vehicle was $1,438 in 2023, up 14.42 percent from 2022. The national average expenditure per insured vehicle was $1,281 in 2023. These figures are national measures, not a prediction of what one driver will pay.
The most useful way to think about your premium is to separate factors you cannot easily change from factors you can control. You may not be able to change your age or local traffic conditions, but you can protect your driving record, choose a different vehicle, adjust coverage, review your deductible, drive fewer miles, and compare insurers.
What Are the 15 Main Factors That Affect Car Insurance Premiums?
| Factor | Why it can matter | Can you change it? |
| 1. Location | Crash, theft, repair, traffic, and state cost patterns vary | Sometimes |
| 2. Age | Claim risk differs across age groups where age rating is allowed | No |
| 3. Gender | Some states allow gender in rating | No |
| 4. Marital status | It may be used where state rules permit it | Sometimes |
| 5. Driving experience | More years behind the wheel may affect risk estimates | Over time |
| 6. Driving record | Tickets and crashes can raise expected risk | Yes |
| 7. Claims history | Prior claims can affect future loss estimates | Partly |
| 8. Credit history | Credit based insurance scores may be used in many states | Partly |
| 9. Prior insurance | A lapse or lack of prior coverage may affect pricing | Yes |
| 10. Vehicle type | Value, repair cost, theft, and claim results differ by model | Yes |
| 11. Vehicle use | Personal, commute, business, and rideshare use differ in risk | Yes |
| 12. Annual mileage | More miles can mean more time exposed to road risk | Yes |
| 13. Coverage choices | More protection usually costs more | Yes |
| 14. Deductible | A higher deductible shifts more loss cost to you | Yes |
| 15. Insurance company | Insurers can price the same risk differently | Yes |
The NAIC identifies the first 14 items or their combined categories as major auto insurance rating inputs. It also advises consumers to compare companies because prices can differ for the same shopper.
1. How Does Your Location Affect Your Premium?
Your address can change your rate because insurance losses are not the same in every area. Traffic density, crash frequency, theft, repair costs, weather losses, medical costs, and state insurance rules can all differ by location.
The NAIC says a state’s insurance costs are affected by driving locations, accident rates, traffic density, theft statistics, repair costs, coverage requirements, and state laws.
Even a move within the same state can change a quote. A driver who moves from a less crowded area to a dense city may face a different loss pattern. The opposite can also happen.
Always give your true garaging address. Incorrect address information can create policy or claim problems.
2. How Does Age Affect Car Insurance Prices?
Age can affect rates in states where insurers are allowed to use it. Younger drivers often have less experience, while some older age groups can show different claim patterns.
Age is not the same as driving experience. A 30 year old who received a license last year may be rated differently from a 30 year old who has driven for more than a decade.
State rules can restrict age based rating, so do not assume the same rules apply nationwide. The NAIC lists age as a common factor but makes clear that state law controls rating practices.
For a closer look at the age pattern, read how age affects car insurance prices for men and women.
3. Does Gender Affect Car Insurance Rates?
Gender may be used in some states and restricted in others. Where it is allowed, insurers may consider group claim patterns when setting rates.
Gender does not create a fixed surcharge or discount. State law and the insurer’s filed rating plan determine how it is treated.
4. Can Marital Status Affect Your Premium?
Marital status is another factor that some insurers may use where state law permits it. It can be part of a broader risk classification system.
The effect is not a universal discount for married drivers. Other factors can outweigh marital status. If your status changes, update your insurer so the policy stays accurate.
5. Why Does Driving Experience Matter?
Years of driving experience help an insurer estimate how much time you have spent handling normal road risks.
Two people of the same age can receive different rates if one has many years of driving history and the other has little experience. The NAIC lists driving experience separately from age because the two do not always move together.
This factor can matter for first time drivers, newly licensed adults, young drivers, and people who have recently started driving in the United States.
6. How Much Does Your Driving Record Matter?
Your driving record can be one of the most direct signals of road risk. Speeding tickets, at fault crashes, and other violations may affect the rate.
The NAIC says insurers commonly request about three years of driving history and can use a Motor Vehicle Report to review named drivers. Some companies apply discounts or surcharges based on at fault accidents and traffic violations.
Speeding also has a clear safety connection. NHTSA reports that 11,288 people died in speeding related crashes in 2024.
A single ticket does not create the same increase for every driver. Read whether a speeding ticket affects your insurance for a closer explanation.
7. Why Does Claims History Affect Your Rate?
Claims history tells an insurer about losses connected with you or your prior policies. The number, type, timing, and circumstances of claims may matter under state and company rules.
A claim does not automatically cause a rate increase. Insurers can treat different losses differently. The NAIC lists claims history as a main rating factor.
If you recently filed a claim and your renewal increased, ask the insurer which factors changed. A higher rate can reflect more than one part of the company’s pricing calculation.
8. Can Credit History Affect Car Insurance?
In many states, insurers may use a credit based insurance score as one part of pricing. It is not the same as the credit score a lender uses to approve a loan.
The NAIC advises consumers that credit based insurance scores are legal for auto insurance pricing in most states, while state restrictions differ. It also recommends checking credit reports for errors before requesting quotes.
Credit does not set your premium by itself. Your driving history, location, vehicle, coverage, and other factors still matter.
If your state restricts credit based insurance scoring, the insurer must follow those rules.
9. Does a Lapse in Prior Insurance Raise Rates?
Previous insurance coverage is a common rating factor. A gap in coverage can affect how an insurer views your risk, depending on state rules and the company’s rating method.
Do not cancel an old policy until the replacement is active if you still own or drive a vehicle that requires coverage. The NAIC includes previous insurance coverage among its main auto rating factors.
A lapse may happen because of nonpayment, cancellation, or a period without coverage. Keeping continuous insurance can therefore matter when you shop for your next policy.
10. How Does Your Car Make and Model Affect the Rate?
The vehicle itself can change expected claim costs. Insurers consider factors such as value, repair cost, theft experience, body design, safety results, and past insurance losses.
HLDI publishes claim results for hundreds of passenger vehicles under collision, property damage liability, theft and other noncollision losses, personal injury protection, medical payment, and bodily injury coverage. Its model results reflect both how often claims occur and how costly some claims are.
A higher purchase price does not always mean a higher premium, but costly parts or poor loss results can matter.
Read how your car make and model affect insurance rates before buying a vehicle.
11. Why Does the Way You Use Your Car Matter?
A car driven only for personal errands presents a different exposure from a car used for daily commuting, deliveries, rideshare work, or other business activity.
The NAIC lists vehicle use as a main rating factor. It also advises drivers to disclose commercial driving, including rideshare activity, so the policy can be written correctly.
Tell the insurer how you use the vehicle. Update the policy if your work pattern changes.
A driver who stops commuting five days a week, for example, may have a different use pattern than before.
12. Can Driving Fewer Miles Lower Your Premium?
Annual mileage can affect rates because more time on the road can mean more exposure to crashes.
The NAIC lists miles driven as a main rating factor. It also explains that usage based programs may price coverage using mileage and driving behavior such as time of day and hard stops.
Drivers who retire, work from home, or stop a long commute should update their annual mileage estimate and keep it accurate.
Some drivers may also qualify for a low mileage or usage based insurance option, depending on the carrier and state.
13. How Do Coverage Limits Change What You Pay?
More insurance protection usually costs more because the insurer accepts a larger possible financial obligation.
Liability limits are a clear example. A policy with higher bodily injury and property damage limits can cost more than one carrying only the state minimum.
Optional protection for damage to your own car, rental costs, roadside service, or other risks can also change the total premium.
Most states require at least some liability coverage, while exact requirements vary. Lenders may also require protection for damage to a financed or leased vehicle.
Read car insurance coverage explained before reducing protection only to lower the price.
14. How Does Your Deductible Affect the Premium?
A deductible is the amount you agree to pay toward certain covered losses before the insurer pays its share.
A higher deductible often lowers the premium for collision or coverage for theft, weather, fire, and similar damage because you accept more of the financial risk.
The NAIC states that increasing a deductible can lower a premium, but consumers should choose an amount they could comfortably pay after a loss.
Do not choose a $1,000 deductible only because the quote is lower if paying $1,000 after a crash would create a serious financial problem.
Compare the actual premium difference between deductible options before changing it.
15. Why Does the Insurance Company You Choose Matter?
Insurers do not all charge the same price for the same driver. Each company has its own approved rating plan, loss experience, discount structure, and business goals.
The NAIC advises consumers to shop around because prices can differ among companies. It also notes that companies have different guidelines for pricing drivers.
Compare quotes with matching coverage limits and deductibles. Otherwise, a lower price may simply reflect less protection.
Compare the full policy term price, coverage limits, deductible, exclusions, and discounts.
Which Factors Can You Control Most Easily?
Some rating factors are difficult or impossible to change. Others deserve regular review.
Focus first on:
- Keeping a clean driving record
- Preventing avoidable coverage gaps
- Reporting accurate annual mileage
- Choosing a vehicle with reasonable insurance loss costs
- Reviewing coverage limits
- Selecting a deductible you can afford
- Asking about available discounts
- Comparing several insurers with matching coverage
The NAIC also recommends checking that the policy lists the correct address, drivers, vehicle make and model, and available discounts.
For more cost reduction ideas, see ways to save money on car insurance.
Why Did My Premium Rise Even Though Nothing Changed?
Sometimes your personal record stays the same while the insurer’s expected claim costs rise.
The NAIC says state insurance costs can change because of accident rates, repair costs, traffic density, theft, state requirements, and other market conditions. Its latest database report found that average incurred collision loss per claim rose from $6,113 in 2021 to $7,191 in 2022.
Your renewal can therefore rise even after a claim free year.
Ask the insurer to explain the new premium. Then check whether your coverage, deductible, discounts, vehicle information, address, mileage, or household drivers changed.
If the insurer confirms that your personal profile did not cause the full increase, comparison shopping may help you see how other carriers price the same risk.
How Should You Compare Quotes Fairly?
Use the same information for every quote.
Match:
- Liability limits
- Deductibles
- Drivers
- Vehicles
- Garaging address
- Annual mileage
- Vehicle use
- Optional coverage
The NAIC warns that online quotes may not use matching coverage and limits. If the quotes differ, ask for revised estimates before deciding which one costs less.
Also verify that the company or agent is licensed in your state.
Look beyond the first payment. Compare the cost for the same policy period and check what protection is included before choosing.
FAQs About Car Insurance Premium Factors
There is no single factor that is most important for every driver. Driving record, location, claims, age or experience, vehicle, coverage, mileage, prior insurance, and other factors can all matter. The weight given to each factor varies by insurer and state law.
Credit based insurance information can affect pricing in many states, but state restrictions vary. The insurance score used for rating is not the same as a lending credit score. Check your state rules and review your credit reports for errors.
It can. Vehicle value, repair costs, theft risk, crash losses, and claim severity differ by make and model. HLDI publishes insurance loss comparisons that show meaningful differences among vehicle models.
It may. Annual mileage is a common rating factor, and some insurers offer usage based programs. Savings depend on the insurer, state, mileage, and driving data used by the program.
A clean record is only one factor. Your location, age or experience, vehicle, claims history, mileage, coverage, deductible, credit based insurance information where allowed, and broader claim costs can also affect the premium.
Yes, it can. The NAIC states that prices differ among insurers and recommends comparison shopping. Compare the same coverage and deductibles so you are measuring price rather than a difference in protection.
Final Takeaway
Car insurance premiums are built from many pieces, not one score. Your location, age, gender, marital status, driving experience, record, claims, credit history where allowed, prior coverage, vehicle, vehicle use, mileage, coverage choices, deductible, and insurer can all affect what you pay. State law decides which rating factors an insurer may use.
Review the factors you can control before each renewal. Keep policy information accurate, protect your driving record, report mileage correctly, review coverage and deductibles, and compare similar quotes rather than focusing only on the lowest monthly payment. Laws and insurance rules differ by state, so confirm local requirements with a licensed insurer, agent, or state insurance department. Alias Insurance helps U.S. drivers compare car insurance quote options so they can review price and protection before selecting a policy.
References and Sources
- National Association of Insurance Commissioners: Auto Insurance
- National Association of Insurance Commissioners: 2022 and 2023 Auto Insurance Database Report
- National Association of Insurance Commissioners: Best Practices for Buying Auto Insurance
- National Association of Insurance Commissioners: Tips for Saving on Auto Insurance
- Insurance Institute for Highway Safety and Highway Loss Data Institute: Insurance Losses by Make and Model
- National Highway Traffic Safety Administration: Speeding
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