Car insurance rates are based on far more than the car you drive. Insurers consider a combination of driver information, vehicle characteristics, location, coverage choices, past insurance history, and other factors allowed in your state when calculating a premium.
Two drivers can therefore receive very different quotes for similar vehicles, and two insurance companies can charge the same driver very different prices. Understanding what goes into your rate can help you compare policies more accurately and identify changes that may reduce what you pay.
What Affects Car Insurance Rates at a Glance?
| Factor | Why It Can Matter | Can You Control It? |
| Driving record | Accidents and violations can indicate a higher likelihood of future claims | Partly |
| Driving experience | Newer drivers generally have less experience behind the wheel | Changes over time |
| Claims history | Past claims may be considered when allowed and relevant to rating | Partly |
| Location | Claim frequency, repair costs, theft, weather, traffic, and other risks vary by area | Usually not easily |
| Vehicle | Value, repair costs, safety characteristics, theft experience, and performance can affect losses | Yes, when choosing a vehicle |
| Mileage and vehicle use | How much and why you drive can affect exposure to accidents | Partly |
| Coverage and limits | Buying more insurance generally increases the premium | Yes |
| Deductibles | Higher deductibles shift more claim cost to you | Yes |
| Prior insurance history | Continuous prior coverage can affect pricing with some insurers | Partly |
| Credit-based insurance information | May be used as a rating factor where state law permits it | Partly |
| Household drivers | Drivers who regularly use insured vehicles can affect the household’s risk profile | Depends |
| Telematics data | Some programs consider mileage and actual driving behavior | Often |
Insurance rating rules vary by state and insurer. A factor listed here may be prohibited, restricted, weighted differently, or not used at all where you live.
Key Takeaways
- Your driving history is only one part of your premium. Your vehicle, location, mileage, coverage selections, deductibles, prior insurance, and other permitted factors can also affect the price.
- Not every insurer prices the same driver the same way. Companies use different rating models, discounts, underwriting rules, and claims experience, which is why comparing equivalent quotes can produce substantially different prices.
- Some commonly discussed rating factors are restricted by state law. Credit-based insurance information, gender, marital status, occupation, education, homeownership, and similar characteristics are not treated the same way in every state.
- You can influence some, but not all, of your premium. Maintaining a safer driving record, avoiding coverage lapses, choosing deductibles carefully, keeping mileage information accurate, reviewing discounts, and periodically comparing insurers may help.
1. Driving Record
Your driving record is one of the most important factors insurers may consider. Depending on the insurer and state, recent at-fault accidents, speeding tickets, serious moving violations, or impaired-driving convictions can increase what you pay.
The effect is not necessarily permanent. Insurers typically consider a defined period of driving history, and state laws can limit how certain incidents are used. Maintaining a safer record over time can therefore improve your insurance profile.
2. Driving Experience and Age
Driving experience matters because a newly licensed driver generally presents a different insurance risk than someone who has been driving for many years.
Age can also be used as a rating factor in many states, although the rules vary. Young and inexperienced drivers commonly pay more because insurers’ loss data tends to show greater claim risk among inexperienced drivers.
It is better to think of age as one part of a larger driver profile rather than assuming your premium automatically drops at a particular birthday. Your driving history, location, vehicle, coverage, insurer, and other factors continue to matter.
3. Where You Live and Garage the Vehicle
Location can have a major effect on auto insurance pricing because insurers experience different claim costs in different areas.
Depending on the state and insurer, geographic rating can reflect factors such as:
- Frequency and severity of accidents in the area
- Vehicle theft and vandalism losses
- Weather-related claims
- Vehicle repair and medical costs
- Traffic patterns and claim frequency
This is why moving, even within the same state, can change your premium without anything changing about your driving record.
4. The Vehicle You Drive
Insurers also price the characteristics and loss experience associated with the vehicle itself. Two cars with similar purchase prices do not necessarily cost the same to insure.
Factors that may matter include:
- The vehicle’s value
- Cost and complexity of repairs
- Availability and price of replacement parts
- Safety characteristics
- Theft experience
- Engine performance and vehicle type
- Historical insurance losses associated with the model
A newer vehicle may cost more to repair or replace, while certain safety or anti-theft equipment may qualify for discounts or be reflected favorably in an insurer’s underlying rating model. That does not mean every vehicle with advanced safety technology will automatically be cheaper to insure.
5. How Much and How You Drive
Annual mileage and vehicle use can influence your premium. In general, more time on the road creates more opportunities for an accident to occur, although each insurer incorporates mileage differently.
An insurer may ask whether the vehicle is used for:
- Commuting
- Personal or pleasure driving
- Business use
- Rideshare or delivery work
Give your insurer an accurate estimate of mileage and vehicle use. Understating how much you drive simply to obtain a lower quote can create problems if the information is material to underwriting or a future claim.
6. The Coverage You Buy
Your premium depends heavily on what you ask the insurer to cover. Higher liability limits, collision coverage, comprehensive coverage, lower deductibles, and optional coverages can all increase the amount you pay because the insurer is accepting more potential financial responsibility.
That does not mean less coverage is automatically the better financial choice. Compare the premium savings with the additional risk you would be taking on yourself.
For example, the difference between minimum and full coverage auto insurance involves much more than price. Liability limits, collision and comprehensive coverage, deductibles, lender requirements, and your ability to absorb a loss all matter.
7. Your Deductibles
A deductible is the amount you are responsible for under a covered claim before the applicable insurance payment is calculated. Collision and comprehensive coverage commonly include deductibles.
Choosing a higher deductible generally reduces the premium for that coverage because you agree to retain more of the financial risk yourself.
For example, a $1,000 deductible may cost less to insure than a $500 deductible, all else being equal. But you should choose an amount you could realistically pay after an unexpected loss rather than raising the deductible solely to reduce the monthly bill.
8. Claims History
Insurers may consider prior claims when permitted by state law and their rating rules. The impact can depend on factors such as the type of claim, fault, severity, frequency, how long ago it occurred, and the insurer’s rating methodology.
A single comprehensive claim for storm damage, for example, may not be treated the same way as multiple recent at-fault collision claims.
This does not mean you should automatically avoid filing a legitimate claim. If damage is relatively minor, however, it can be useful to compare the repair cost with your deductible and consider whether filing makes financial sense. RateFrog has a separate guide on when paying for repairs out of pocket may be worth considering.
9. Prior Insurance and Coverage Lapses
Your prior insurance history can affect pricing with some companies where state law allows it. Maintaining continuous coverage may qualify you for favorable pricing or a continuous-insurance discount.
A lapse can also create problems beyond the premium itself. Depending on the circumstances and state, driving without required insurance can expose you to legal and financial consequences.
If you are switching insurers, make sure the new policy becomes effective before the old one ends. Our guide to what happens when car insurance lapses explains the issue in more detail.
10. Credit-Based Insurance Scores
In states where the practice is permitted, many auto insurers use information from a consumer’s credit history as one input in insurance underwriting or rating.
This is commonly referred to as a credit-based insurance score. As the NAIC explains, it is not necessarily the same score a lender sees when you apply for a mortgage or credit card. Insurance scoring models use information from a credit report to estimate insurance risk rather than the likelihood that you will repay a loan.
Credit-based insurance scoring is also an area where state rules matter significantly. Some states prohibit or restrict insurers from using credit information for auto insurance, while others allow its use subject to consumer-protection requirements.
Because of those differences, avoid assuming that improving a conventional credit score will produce a specific reduction in your car insurance bill. If credit information is permitted in your state and used by your insurer, keeping your credit report accurate can still be important.
11. Other Drivers in Your Household
Your insurer may need information about other licensed household members and people who regularly drive your vehicles. Adding an inexperienced driver, a teen driver, or someone with a poor driving record can affect the policy’s price.
Do not omit a household or regular driver simply to obtain a cheaper rate. Insurer rules regarding household members, permissive drivers, excluded drivers, and regular vehicle use vary, so provide accurate information and ask how each driver should be listed.
12. Telematics and Usage-Based Insurance
Some insurers offer usage-based insurance programs that use a smartphone app, connected vehicle, or other telematics technology to evaluate how or how much you drive.
Depending on the program, an insurer may consider information such as:
- Mileage
- Braking
- Acceleration
- Time of day
- Cornering or speed-related behavior
- Phone use while driving
Programs differ significantly. Some primarily offer discounts, while others may use collected driving behavior more directly in determining renewal pricing where permitted. Before enrolling, review what data is collected, how long it is retained, and whether unfavorable driving data can increase your rate.
What About Gender, Marital Status, Homeownership, Occupation, and Education?
Some insurers and states allow certain personal characteristics to affect auto insurance pricing, while other states prohibit or restrict them. For example, state insurance rules can limit the use of gender, marital status, homeownership, occupation, education, or similar non-driving factors.
There is also an important difference between a rating factor and a discount. An insurer might not use homeownership or employment as a direct rating factor but could offer an approved multi-policy, homeowner, employer, professional-association, or affinity discount in some jurisdictions.
For that reason, it is inaccurate to say broadly that being married, owning a home, graduating from college, or working in a particular profession will always lower your insurance rate.
Instead, ask each insurer which discounts are available on your policy. RateFrog’s guide to car insurance discounts covers many of the savings opportunities worth checking.
Why Can Your Rate Increase Even If Nothing Changed?
Not every premium increase is caused by something you personally did.
Insurers develop base rates using their expected claim costs and approved rating methods. If the expected cost of insuring a group of drivers changes, an insurer may seek to change its rates even if an individual customer has not received a ticket, filed a claim, moved, or changed vehicles.
This helps explain why a renewal price can rise despite an unchanged driving record. Your individual characteristics affect how the insurer applies its rating plan to you, while broader changes to the insurer’s rates can affect many policyholders at once.
Which Car Insurance Factors Can You Actually Control?
You cannot change every factor insurers consider, but several practical steps may help you manage your premium.
- Drive safely. Avoiding at-fault accidents and traffic violations can improve your insurance profile over time.
- Prevent unnecessary coverage lapses. Coordinate start and cancellation dates carefully when changing insurers.
- Keep your information accurate. Make sure mileage, garaging location, household drivers, vehicle use, and other policy details are current.
- Choose deductibles deliberately. A higher deductible may lower the premium, but only choose an amount you could comfortably pay after a claim.
- Review your coverage. Your needs can change as your vehicle ages, your finances change, or a loan is paid off. Do not remove coverage simply to reduce the premium without considering the additional risk you would retain.
- Check every available discount. Discounts may be available for bundling, multiple vehicles, safe driving, students, low mileage, vehicle equipment, payment methods, telematics, or other qualifying circumstances.
- Compare equivalent quotes. Keep drivers, vehicles, limits, deductibles, and optional coverages as similar as possible so you are comparing prices for roughly the same protection.
Why Shopping Around Can Make Such a Big Difference
Insurance companies do not all price risk identically, and the NAIC notes that “prices can differ among companies.” One carrier may be relatively competitive for a driver with a long clean record, while another may price the same household differently because of its rating model, discounts, prior claims experience, or business strategy.
That means there is no single company that is cheapest for every driver. Even if your current premium seems reasonable, periodically comparing equivalent coverage can show whether another insurer evaluates your profile more favorably.
RateFrog explains why periodically shopping for car insurance can be worthwhile. When comparing prices, make sure a lower quote is not simply offering lower liability limits, higher deductibles, or fewer optional coverages. The same goes for budget-based quote tools like Progressive’s Name Your Price, which shows coverage that fits the price you enter.
Frequently Asked Questions
What is the biggest factor affecting car insurance rates?
There is no universal single biggest factor for every driver or insurer. Driving record, driving experience, location, vehicle, claims history, mileage, coverage selections, deductibles, and other permitted factors can all materially affect a premium. Insurers also weight these factors differently.
Does a credit score affect car insurance?
It can in states where insurers are permitted to use credit information. Insurers commonly use a credit-based insurance score rather than the conventional consumer credit score used for lending. Some states prohibit or restrict the practice.
Will raising my deductible lower my insurance rate?
Generally, choosing a higher collision or comprehensive deductible can lower the premium for that coverage because you agree to pay a larger portion of a covered loss yourself. The exact savings depends on the insurer and policy.
Does driving fewer miles lower car insurance?
It may. Mileage is a common auto insurance rating factor, and some insurers also offer low-mileage discounts or usage-based programs. Exactly how mileage affects the premium varies by company and state.
Why are my quotes different from one insurance company to another?
Insurers use different rating models, discounts, underwriting rules, and loss experience. As a result, two companies can evaluate the same driver and vehicle differently. This is one reason comparing quotes using the same coverage limits and deductibles can be useful.
Bottom Line
Car insurance premiums are based on a combination of your driving history, experience, vehicle, location, mileage, coverage choices, deductibles, prior insurance, claims history, and other factors permitted in your state. Some insurers may also use credit-based insurance information, telematics data, or other approved characteristics.
The important point is that no single factor determines your price, and no single insurer will necessarily offer the lowest rate for every driver.
Focus first on coverage that fits your needs, then look for ways to reduce the price without unintentionally removing protection you want. Review discounts, keep your policy information accurate, avoid unnecessary coverage lapses, choose deductibles you could afford after a claim, and compare equivalent quotes from multiple insurers periodically.