Why did my car insurance go up?

No ticket. No accident. Same car, same address. And the renewal letter still shows a higher number. Here is what is usually behind it, and what you can do before you pay.

Reasons that have nothing to do with you

Most renewal increases come from the insurer's costs, not from anything you did. When a company pays out more than it expected across a whole state, it asks to raise rates for everyone it insures there.

• Repairs cost more. Newer cars carry cameras and sensors in the bumpers and windshield. A fender bender that used to mean a body panel can now mean recalibrating electronics as well.
• Parts and labor cost more. When the price of parts, paint and shop time rises, every claim gets more expensive.
• Medical bills cost more. Injury claims are a large part of what auto insurers pay, and those costs tend to rise year after year.
• Weather. Alabama sees hail, tornadoes and tropical storms. A bad season means many comprehensive claims at once, and that shows up in the following year's rates.
• More uninsured drivers. When more people on the road carry no insurance, insured drivers' own policies end up paying for more crashes.

Reasons that are about you, even without a ticket

Some changes are easy to miss because nothing dramatic happened.

• A discount ended. New-customer, paid-in-full, paperless and good-student discounts can expire or drop off quietly. This is one of the most common causes.
• Your ZIP code changed. Rates depend on where the car is parked overnight. Moving a few miles can change the price.
• You added a driver or a car. A newly licensed teenager is the biggest single increase most households ever see.
• Your mileage went up. A longer commute or a new job can move you into a higher band.
• Your credit-based insurance score changed. Many insurers use a score built from credit information when setting rates. A drop can raise your price even with a clean driving record.
• A claim that wasn't your fault. Some insurers count claims of any kind, including glass or towing, when they review your renewal.
• A lapse in coverage. Even a short gap between policies can cost you a continuous-coverage discount.

What to do before you pay the new price

1. Read the declarations page. It is the one- or two-page summary at the front of your renewal. Compare it line by line with last year's and look for a discount that has disappeared or a coverage that changed.
2. Ask why. Call and ask what changed on your policy. You are entitled to a plain answer.
3. Ask about every discount. Bundling home or renters insurance, paying in full, a defensive driving course, and safety features on your car are the usual ones.
4. Look at your deductible. Raising it lowers the premium. Only choose an amount you could pay tomorrow without borrowing.
5. Compare quotes. Insurers do not all raise rates at the same time or by the same amount. The company that was cheapest for you three years ago may not be today.

One caution: cutting coverage to bring the price down is the riskiest way to save. Dropping to the legal minimum can leave you personally responsible for costs above your limits after a serious crash.

When is it worth switching?

Compare when your renewal goes up by more than you can explain, when your household changes (a new driver, a new home, a marriage), or when it has been more than two years since you last checked. Make sure each quote uses the same limits and deductibles as your current policy, or the comparison will not be fair. Our guide to reading your policy shows you where to find those numbers.

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