Car insurance

Car insurance is the only product most people are legally required to buy, renew every six months, and never actually understand. This is the plain-English version of how it is priced, written by an editor who spent 18 years on the industry side of insurance marketing. Every figure below is dated and sourced to a government or independent record so you can check the math.

You are not priced as a person

The central thing to understand is that your premium is not a measurement of you. It is your share of a pool. Insurers estimate what an entire group of drivers who resemble you on paper will cost them over the next term, add expenses and a margin, and divide. Your driving record adjusts your slice of that bill. It does not set the size of the bill.

This is why a spotless record can coexist with a rising premium. If repair costs, medical costs, or litigation costs rise for everyone in your pool, your slice of a bigger number can grow even in a year you did nothing wrong. Understanding that one mechanic explains most of what looks arbitrary on a renewal notice.

What prices have actually done

Auto insurance went through a genuine shock. The federal motor vehicle insurance price index rose 14.2% in 2022, 20.3% in 2023, and 11.3% in 2024. It then slowed to 2.8% in 2025 and turned negative, falling 4.5% over the twelve months ending July 2026.

Both halves of that matter. Prices are easing now, which is why headlines say insurance is getting cheaper. And prices are still far above where they were in 2020, which is why your bill does not feel cheap. Between 2020 and 2024, auto insurance costs outran US median household income by a cumulative 36.1 percentage points.

The four things that actually move your bill

Where you garage the car. Insurance is regulated and priced state by state, and rates are approved by your state insurance department before a carrier may use them. A national average is an average of markets moving in opposite directions, so it describes no actual driver. Measured as a share of household income, the burden ranged from about 2.67% in Louisiana to roughly 0.93% in North Dakota in 2022, nearly three times the weight for the same legal requirement.

What the car costs to fix. This is the pressure that has not turned around. While insurance prices fell over the past year, the federal index for motor vehicle maintenance and repair rose 6.6%. Modern bumpers house radar sensors and cameras that require recalibration after minor impacts, and every one of those repairs is paid out of the pool.

Which carrier you happen to be with. Each carrier runs its own model against its own pool, so the same driver can be priced very differently across companies. Several state insurance departments publish official premium comparison tools built from filed rates. They are free, they have no stake in your decision, and almost nobody uses them.

Factors that have nothing to do with driving. Most states permit credit-based insurance scoring in auto rating. A few prohibit it. California bars it outright under 10 CCR section 2632.5(c)(2), a rule tracing back to Proposition 103, which restricts rating primarily to driving record, annual mileage, and years of experience. Check which rule your state follows before you shop.

How we cover this

We do not cite insurance marketplaces or affiliate comparison sites for data. Their numbers come from quote engines fed by people already shopping because their rate went up, which is a sample that cannot measure the market. We use federal agencies, state regulators, and independent non-commercial research, and every article lists its sources with dates so you can verify them yourself.

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Four guides, sorted by what you are actually trying to do.

Written by

Keith Guirao

Founder & Editor, ConsumersWeek

18+ years in consumer marketing and lead generation across insurance, personal finance, and home services. ConsumersWeek explains how these products are priced and sold so you can evaluate them with the same information the industry has.

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