How to read car insurance rate studies and average-cost claims

Car insurance "average cost" figures disagree because they measure different things: what drivers actually spent, the price of a fixed bundle of coverage, or quotes generated for a made-up driver. A government figure like the NAIC's $1,281.92 average expenditure for 2023 and a study quoting more than $2,000 for "full coverage" can both be accurate. Before you trust any number, check what was measured, for whom, for which year and with what coverage.

Four kinds of numbers you will see

Spending data: the NAIC

The National Association of Insurance Commissioners' Auto Insurance Database Report is the closest thing to an official average. Its 2022/2023 edition, released in February 2026, reports a 2023 average expenditure of $1,281.92 and a combined average premium of $1,438.60. The difference arises because many drivers do not buy collision or comprehensive: average expenditure divides all premium by the number of cars with liability coverage, while the combined premium adds up the average price of each coverage among those who buy it. A Triple-I analysis of the 2023 NAIC data found about 80% of insured drivers buy comprehensive and 77% buy collision (III).

The NAIC warns that its figures do not account for driver classifications, vehicles, limits or deductibles, and that state comparisons "should be treated with a high degree of caution." Details are in What NAIC auto insurance data measures.

Price trend data: the CPI

The Bureau of Labor Statistics' Consumer Price Index for motor vehicle insurance tracks how the price of the same coverage changes month to month. It does not tell you what a policy costs, but it is the best guide to direction. It rose 55.5% from December 2020 to August 2026 and was down 5.1% over the year to August 2026, by our calculation from BLS data.

The NAIC explains why CPI and spending can diverge: when prices rise, some drivers drop coverage or raise deductibles, so spending rises less than price. From 2019 to 2023, NAIC average expenditure rose 19.24% while the CPI auto insurance component rose 36.56%.

Quote-based studies

Comparison sites, consumer publications and some advocacy groups commission quotes for sample drivers across many ZIP codes and insurers, then publish averages. These can be useful for seeing how one factor (a ticket, a teen driver, a ZIP code) changes a price, but the headline number reflects choices the authors made:

• The driver profile: age, gender, marital status, credit tier, driving record and years insured.
• The car: often a popular midsize sedan; a pickup or EV would price differently.
• The coverage: "full coverage" usually means liability at limits such as 100/300/100 plus collision and comprehensive with a set deductible; "minimum coverage" means the state's legal minimum.
• The insurers included: often the largest national carriers, sometimes not regional companies or those that do not quote online.
• Weighting: a simple average of ZIP codes weights a rural ZIP the same as a city one with many more drivers.

AAA's long-running Your Driving Costs study is a good example of a disclosed profile. Its 2026 edition, released September 15, 2026, estimated the cost of owning a new vehicle at $12,863 a year; the Insurance Information Institute reports its average full-coverage insurance cost for all vehicles was $2,098, for a driver under 65 with more than six years of experience, no accidents, living in a suburban or urban area, with 100/300 liability, $100,000 property damage, $25,000/$50,000 uninsured motorist coverage and $500 deductibles (AAA, III). AAA also cautions that methodology updates make the 2026 figures not directly comparable with 2025.

Satisfaction and complaint studies are not price studies

J.D. Power studies measure customer satisfaction, and the NAIC complaint index measures complaints relative to market share. Both are useful when choosing a company, but neither tells you what you will pay. See J.D. Power auto insurance studies explained and The NAIC complaint index: how to look up an insurer.

A checklist for judging any rate study

1. What is measured? Spending, an index, or quotes?
2. Which year? Official spending data lags two to three years; quote studies reflect the month they were run.
3. What coverage? Minimum, "full," or a mix? What limits and deductible?
4. Who is the driver? Check age, record, credit tier and vehicle against your own.
5. Which insurers and places? National carriers only? Weighted by population?
6. Who paid for it? A study by a lead-generation site or advocacy group may be accurate, but know the publisher's interest; see how car insurance comparison sites and lead generators work.
7. Is the methodology published? If not, treat the number as marketing.
8. Does it compare like with like? A state ranking based on full coverage in one year and minimum coverage in another is meaningless.

What to do with a study's number

Use averages to understand trends and to spot whether your price is far out of line, then get real quotes for your own driver, car, address and coverage. The car insurance quote comparison worksheet keeps limits and deductibles identical across insurers, and how to compare car insurance quotes apples to apples explains what to check. For a plain-language explanation of the national figures, see the average cost of car insurance, and what the numbers mean.

Key takeaways

• NAIC spending data, the BLS price index and quote-based studies measure different things and are not interchangeable.
• The NAIC's 2023 national average expenditure was $1,281.92; AAA's 2026 full-coverage estimate for a defined driver was $2,098.
• Quote studies depend on the sample driver, car, coverage, insurers and weighting chosen by the authors.
• Satisfaction and complaint studies help you choose a company but say nothing about price.
• No average replaces quotes for your own situation.