Car insurance isn't something you probably think about often, but it's an important tool in protecting your assets.

It pays to learn about your policy before you need it so you can take advantage of its benefits and avoid any unpleasant surprises.

Whether you're shopping for a new policy or are wondering about the specifics of your current coverage, you may be surprised by what you find.

The following are five things you probably don't know about auto insurance:

It may cover more than you realize.

If your car is damaged when a rodent chews through some wires, your expenses will most likely be covered, according to the Motley Fool. Your auto insurer may also pay for damage suffered when your car hits a pothole, and, although you probably won't need it, damage from a riot or meteor. And if you're involved in legal action as the result of a vehicle accident, your car insurance may also provide help with some legal costs.

Your car's contents were stolen or damaged? Too bad.

If you're like many people, you might have several expensive items – your phone, laptop and navigation system – that you often leave in your car. Unfortunately, if you're in an accident and these items are damaged, you're probably on your own when it comes to replacing them, U.S. News & World Report warns. The same is true if your car is stolen while the items are inside.

Other drivers in your house need to be listed on the policy.

In most cases, a car insurance policy provides coverage for you and other people who don't live with you but may occasionally drive your car, according to Business Insider. But if you have other drivers in your home, they will need to be listed on your policy as well. Otherwise, they probably won't be covered if they drive your car and are in an accident.

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Your rates could go up because of an accident that wasn't your fault.

The Consumer Federation of America (CFA) found that many companies will raise your rates if you open a claim, even if you're not at fault. The practice is illegal in at least two states (California and Oklahoma), but drivers who live elsewhere are not protected. Companies vary in how much they'll raise your rates, and the CFA found that moderate-income drivers often face higher increases than higher-income drivers do.

You may be missing out on some discounts.

You might be getting a discount for being a good driver or because you're in a certain age group, but you may be missing out on some less-obvious discounts. According to Fox Business, some insurance companies offer discounts if you belong to certain professional groups, are a graduate of a certain college or belonged to one of its affiliated fraternities or sororities.