The national price of car insurance fell 5.1 percent in the year to August 2026, the biggest decline in the CPI. Here is the full arc since 2020, why repair costs rose anyway, and why your own bill may not have moved.

For four years the story about car insurance was that it only went one way. That story is now out of date. In the 12 months ending August 2026, the Bureau of Labor Statistics measured the motor vehicle insurance index as down 5.1 percent. The same release notes that “the motor vehicle insurance index declined 0.8 percent in August after falling 0.3 percent in July.” Insurance was the largest single decline in a report where all items rose 3.4 percent.

That is a genuine reversal, and it is worth understanding properly, because two things are true at once: the national price of car insurance is falling, and a great many households have not seen a smaller bill.

The arc, in one table

The BLS publishes the motor vehicle insurance index as series CUUR0000SETE. Reading the 12-month change from each December news release gives the whole run. The index column is our arithmetic, compounding the published annual changes from a base of 100 in December 2020.

12 months ending Change in motor vehicle insurance index Index, December 2020 = 100
December 2021 up 4.1 percent 104.1
December 2022 up 14.2 percent 118.9
December 2023 up 20.3 percent 143.0
December 2024 up 11.3 percent 159.2
December 2025 up 2.8 percent 163.6
August 2026 down 5.1 percent turning down

The peak was not December of any year. It came in the 12 months ending April 2024, when the index was up 22.6 percent year over year. That is the steepest reading in the run.

Compound the five annual changes and a bill that tracked the index exactly would have gone from 100 dollars in December 2020 to about 164 dollars by December 2025, a rise of roughly 64 percent in five years. The index has since turned down. It has not come close to giving that back.

Falling insurance, rising repairs

The August 2026 release contains a divergence that is worth sitting with. Over the same 12 months:

  • Motor vehicle insurance: down 5.1 percent
  • Motor vehicle maintenance and repair: up 5.2 percent
  • Motor vehicle parts and equipment: up 0.9 percent
  • Used cars and trucks: down 2.3 percent
  • New vehicles: up 0.6 percent
  • Medical care: up 1.6 percent

Fixing a car got more expensive while insuring one got cheaper. Insurance prices are not a direct pass-through of repair costs, because a premium reflects the cost per claim multiplied by how often claims happen, plus a competitive market’s judgement about whether last year’s rates were set too high.

Here we owe readers an honest admission. We looked for a regulator’s published explanation of the 2026 decline and did not find one. Neither the BLS, nor the National Association of Insurance Commissioners, nor the state insurance departments we checked has published an analysis attributing the fall to a cause. What follows is the underlying loss data, which is well documented, and the inference is ours.

Claims are getting less frequent and less severe in aggregate. The National Highway Traffic Safety Administration’s early estimate for 2025 puts traffic deaths at 36,640, “a decrease of about 6.7 percent as compared to 39,254 fatalities reported to have occurred in 2024.” The fatality rate fell from 1.19 to 1.10 per 100 million vehicle miles travelled, even as miles driven rose by roughly 29.8 billion. Safety per mile improved while exposure grew.

Theft has collapsed two years running. The FBI’s Uniform Crime Reporting summaries record motor vehicle theft down an estimated 18.6 percent in 2024 and down an estimated 22.7 percent in 2025. Theft is a comprehensive-coverage cost, and two consecutive double-digit declines is a large change in that line.

The repair-cost paradox has a documented explanation too, from the Insurance Institute for Highway Safety and its affiliated Highway Loss Data Institute. Both are research bodies funded by insurers, not government agencies, and that funding should colour how you read them. Their August 2026 analysis of 2017 to 2022 model year vehicles found that “collision claim severity was about 10 percent higher for the equipped vehicles” carrying crash-avoidance technology, and property damage liability severity higher “by an even larger 15 percent.” But frequency moved the other way: “about 10 percent lower for collision claims and almost 40 percent lower for PDL claims.” Net, “overall losses were about 5 percent lower for collision coverage and almost 30 percent lower for PDL coverage.”

Each repair costs more. There are fewer repairs. Total losses fall. That is how a premium can drop in a year when the body shop’s prices rise.

Why your bill may not have moved

The CPI is a national average across every policy in the country. It is not your renewal notice. Three things break the connection.

First, geography. The NAIC’s most recent Auto Insurance Database Report puts the countrywide average expenditure per insured vehicle at 1,281 dollars in 2023, “an increase of 13.99 percent over the previous year.” The spread between states is wide, and the NAIC attributes that to differences in traffic density, accident rates, repair costs, auto theft, state laws and “differences in state requirements for insurance coverage, limits, and benefits.” Note the data year: 2023 is the peak of the surge, not the present. It tells you about dispersion, not about today’s price.

Second, timing. Rates are filed, approved and applied at renewal. A carrier that filed a decrease in spring 2026 does not reach your policy until your renewal date, and a carrier still working off an approved increase may raise your bill in a falling market.

Third, you. The index holds the policy constant. Your policy does not hold you constant. A new vehicle, a moved address, a teenage driver, a lapsed payment or a claim will each swamp a 5 percent market move.

A three-number check before you renew

Here is a rule that takes about 20 minutes and is worth more than any single tactic.

Number one: what you pay now, per six-month term, for a specific set of limits and deductibles. Write down the limits, not just the total. The NAIC’s consumer guide is emphatic about why this matters: “When you get quotes be sure to ask for the same coverages and limits and give the same information to each agent or company.”

Number two: what two other carriers charge for exactly that. The NAIC’s flat statement is “Different insurance companies charge different rates for the same coverage.” Several states publish the evidence themselves rather than asking you to take it on faith. Maryland’s Insurance Administration publishes an auto rate comparison guide built from sample driver scenarios with each insurer’s annual premium listed side by side. Texas runs HelpInsure. California’s Department of Insurance publishes a premium comparison tool. In all of them the same driver, same coverage, different carrier produces differences measured in multiples rather than percentages.

Number three: what the same policy costs with the next deductible up. The NAIC states the trade plainly: “A policy with a 1,000 dollar deductible has a lower premium than the same policy with a 500 dollar deductible.” The test is not whether it saves money. It is whether you could write the larger cheque tomorrow without borrowing. If the answer is no, the lower deductible is doing a job.

If number two beats number one by more than the hassle is worth, switch. You do not have to wait for your renewal date. The NAIC notes that “if you or the insurer cancels your policy, the company may refund part of your premium,” so a mid-term switch generally returns the unearned portion.

Two things worth checking that are not price shopping

Your credit report is probably in your rate. The NAIC confirms that “most insurers use the information in your credit report to calculate a credit-based insurance score,” and notes those scores “are different from other credit scores.” The Federal Trade Commission’s 2007 report to Congress, still the definitive federal study and now nearly two decades old, found that such scores “are effective predictors of risk under automobile policies,” while also documenting that average predicted risk rose 10 percent for African Americans and 4.2 percent for Hispanics relative to other groups. State law varies: Massachusetts and Hawaii prohibit the use of credit information in auto rating outright. Maryland bars an increase at renewal based on credit history, caps any credit-based surcharge at 40 percent, and gives consumers the right to “request that your insurer recheck your credit history once per policy period.” If your credit has improved, that request is free money.

Your driving data may already have been sold. In January 2025 the Texas Attorney General sued Allstate and its subsidiary Arity, alleging the company “paid mobile apps millions of dollars to install Allstate’s tracking software” and thereby “collected trillions of miles worth of location data from over 45 million consumers nationwide.” The complaint alleges that “when a consumer requested a quote or renewed their coverage, Allstate and other insurers would use that consumer’s data to justify increasing their car insurance premium.” These are allegations in a pending case, not findings. But before you enrol in a telematics discount, it is reasonable to ask what happens to the data if the discount does not materialise, and worth knowing that the NAIC’s consumer guide does not mention telematics at all.

The part that does not resolve neatly

A 5.1 percent decline after a 64 percent run-up is not relief in any ordinary sense of the word. It is the market conceding that it overshot, slowly, on its own schedule, and only for those whose renewal happens to land in the right window with the right carrier. Nothing you do as a driver caused the index to turn, and nothing you do will make your carrier pass it along faster.

What is in your control is narrow and unglamorous: knowing your limits, getting two other quotes on those exact limits, and checking whether an old credit record is still being priced in. That is the whole list. It was the whole list when prices were rising 22 percent a year, and it worked about as well then. The difference now is that the market is finally moving in your direction, which means the same 20 minutes is likelier to be rewarded.

General information, current as of September 2026, and not personalised advice. Rates, state rules and the figures above change; check the primary sources and your own policy before acting.

Frequently asked questions

Why did my premium go up when prices are falling?

Rate changes reach you only at renewal, so a decrease may not have arrived yet. Changes to your vehicle, address, drivers or claims history also outweigh a national 5 percent move.

How much can shopping around save?

The NAIC states plainly that different insurance companies charge different rates for the same coverage, and several state insurance departments publish comparison guides showing wide differences for identical drivers.

Does my credit record affect my premium?

In most states yes. The NAIC confirms that most insurers use a credit-based insurance score. Massachusetts and Hawaii prohibit its use in auto rating.

Should I raise my deductible?

It lowers the premium, but only take the higher deductible if you could pay it tomorrow without borrowing.

Sources

  1. Bureau of Labor Statistics, Consumer Price Index news release, August 2026
  2. Bureau of Labor Statistics, CPI news release archive, May 2024
  3. Bureau of Labor Statistics, CPI fact sheet on motor vehicle insurance
  4. National Association of Insurance Commissioners, Auto Insurance Database Report
  5. National Association of Insurance Commissioners, A Consumer Guide to Auto Insurance
  6. National Highway Traffic Safety Administration, traffic deaths 2025 early estimates
  7. FBI Uniform Crime Reporting, Summary of Reported Crimes in the Nation 2025
  8. Insurance Institute for Highway Safety, crash avoidance technology and repair costs
  9. Federal Trade Commission, Credit-Based Insurance Scores report to Congress
  10. Maryland Insurance Administration, Auto Insurance Comparison Guide to Rates
  11. Texas Department of Insurance, HelpInsure auto rate comparison
  12. Texas Attorney General, action against Allstate and Arity over driving data

About the author

Answerunboxed Editorial

Answerunboxed is an independent consumer guide covering money, insurance, health, home, auto, technology and careers for readers in the United States. Every article is researched from primary sources — IRS publications, CDC and NIH guidance, NAIC filings, CFPB and FTC material — and links to the sources it relies on so you can check the work yourself. We are not licensed financial advisers, insurance agents, tax professionals or physicians, and nothing published here is personalised advice for your situation.