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What Is Auto Liability Insurance?

Understanding Coverage: Part 1

Key Takeaways

  • Explains what liability car insurance coverage is and what it may pay for after an at-fault accident.
  • Breaks down bodily injury liability and property damage liability with practical examples.
  • Shows how coverage limits work and why state minimums may not be enough for every driver.
  • Answers common questions about how much auto liability insurance you may need and how liability fits into a standard auto policy.

Auto liability insurance is one of the most important parts of an auto policy because it helps protect you financially if you cause an accident. Liability car insurance coverage helps pay for injuries to other people or damage to their property when you're legally responsible.

Liability coverage is required in most states, but choosing the right amount involves more than just meeting the required state minimum. Understanding what liability insurance covers, how limits work and how much auto liability insurance you may need can help you build coverage that fits your life.

Quick takeaway: Liability coverage helps protect your finances after being legally responsible for an accident, but it doesn’t pay for damage to your own car.

Many drivers pair it with other coverages such as collision, comprehensive and/or medical coverage.

What does liability insurance cover?

Liability car insurance coverage includes two main parts: property damage liability and bodily injury liability. Together, these coverages help pay for losses you may cause to others in an accident where you are held legally responsible.

Type of liability coverageWhat it helps pay forWhat it usually doesn’t cover
Property damage liabilityDamage you cause to someone else’s car or other property, plus related legal costs in some casesDamage to your own vehicle
Bodily injury liabilityInjuries to other drivers, passengers or pedestrians, plus related legal costs in some casesYour own injuries

Property damage liability coverage

Property damage liability coverage helps pay for the repair or replacement of another person’s property that you damage in a car accident. That may include situations like:

  • Damaging someone’s car in an accident you're legally responsible for
  • Colliding with stationary objects, like someone else's mailbox, fence, sign or building
  • Legal costs if the other party files a lawsuit against you for their damages

While property damage liability helps with someone else’s property, it doesn’t cover damage to your own vehicle. If you damage your own car in a crash, you’d generally need collision coverage to restore your vehicle to its pre-loss condition.

Bodily injury liability coverage

Bodily injury liability coverage helps protect you from the financial impact of causing injuries to others in a car accident. This can include:

  • Medical expenses for injuries and pain and suffering sustained by other drivers, passengers or pedestrians
  • Lost wages if the injured person is unable to work due to the accident
  • Legal costs if the injured party files a lawsuit against you for their damages

Bodily injury liability doesn’t cover your own injuries. If you’re hurt in an accident, you may need personal injury protection (PIP) or medical payments coverage, depending on your policy and state.

Do I need liability car insurance?

Yes — almost every state requires drivers to carry some level of liability coverage. Each state sets its own minimum limits, but those minimums may not provide enough protection after a serious accident or when multiple parties are involved.

If you cause an accident and the injuries or property damage go beyond your policy limits, you may have to pay the remaining costs out of pocket.

Check your state minimums and think carefully about whether those limits would be enough to protect your income, savings, other assets and future earnings.

How much auto liability insurance do I need?

If you’re asking how much auto liability insurance do I need, start by looking at your exposure to risk. State minimums can be a starting point, but many drivers choose higher limits because medical bills and vehicle repairs can add up fast after an accident.

Understanding your liability limit(s) is essential. These limits are the maximum amounts your insurance may pay for a covered claim. Many auto policies use split limits, which divide protection into three categories.

Many insurance professionals recommend at least 100/300/100 for auto liability coverage. Here’s what those numbers mean:

  • $100,000: The maximum limit for bodily injury coverage per person
  • $300,000: The maximum limit for bodily injury coverage per accident
  • $100,000: The maximum limit for property damage coverage per accident
Liability limit formatWhat it meansExample
Split Limits Example: 100/300/100$100,000 bodily injury per person, $300,000 bodily injury per accident, $100,000 property damage per accidentCan help cover multiple injured people up to $100,000 each for a maximum of $300,000 total, plus damage to other vehicles or property from one accident up to $100,000 total
Combined Single Limit Example: $300,000$300,000 total liability limit for bodily injury and property damage combinedA $300,000 single limit may be used across both injury and property claims combined from one accident

When to consider higher liability limits: 

  • You own a home or have significant savings or assets 

  • You have future income you want to protect 

  • You frequently drive in high-traffic areas 

  • You want peace of mind knowing you have a financial buffer

For example, let’s say you cause an accident with the following damages:

  • The other driver was also injured in the accident and their bodily injury claim was settled in the amount of $90,000.
  • The other vehicle involved in the accident suffered damages in the amount of $20,000.

With a 100/300/100 policy, your insurance could cover the $90,000 bodily injury claim for the other driver and the $20,000 in property damage to their vehicle, subject to policy terms and any other applicable limits.

Liability coverage can also appear as a single limit on your declarations page. In that case, one total amount would apply to bodily injury and property damage claims combined, up to the maximum coverage available.

How to choose car liability coverage limits

When choosing auto liability coverage limits, think beyond the legal minimum. Any expenses above your limits may become your responsibility, so higher limits can offer more protection after a major loss.

If you have assets you want to protect – like a home, savings or other valuable possessions – a personal umbrella insurance policy may provide an extra layer of liability protection after your auto policy limits are exhausted.

If you choose lower liability limitsIf you choose higher liability limits
Premiums are usually lowerMay offer more financial protection after a serious accident
May satisfy state minimum requirementsMay better protect savings, income and other assets
Could leave a larger out-of-pocket gap if damages exceed your limitsMay reduce the chance of paying large liability costs yourself

What liability coverage does not cover

Liability coverage is important, but it isn’t designed to pay for everything. In general, it does not cover:

  • Damage to your own vehicle after a crash
  • Theft, vandalism or weather damage to your car
  • Your own injury-related expenses after an accident

That’s why many drivers combine liability with collision coverage, comprehensive coverage, uninsured and underinsured motorist coverage and medical coverages when available.

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FAQs about auto liability insurance

Liability car insurance coverage helps pay for injuries or property damage you cause to others in an accident for which you are held legally responsible. It usually includes bodily injury liability and property damage liability.

Liability insurance generally covers damage you cause to another person’s vehicle or property, along with injuries to other people and, in some cases, related legal expenses. It does not cover damage to your own car.

The amount you need depends on your state requirements, your assets and how much financial protection you want after an accident. Most drivers choose limits above the minimum because serious accidents can create costs that exceed state minimums.

No. Liability coverage helps pay for damage or injuries you cause to others. Damage to your own vehicle is usually handled by collision or comprehensive coverage, depending on the loss.

In some cases, your liability coverage may extend to a rental car, but you should confirm with your insurer before renting. Rental companies may also offer their own coverage for an additional cost. You can learn more in "Do I Need Rental Car Insurance?"

Yes. You can usually increase your liability limits to add more financial protection. It’s smart to review your limits after major life or financial changes.

Generally, insurance follows the car, so the vehicle owner’s policy may serve as the primary coverage if you have permission to drive it. If damages exceed that policy’s limits, your own insurance may provide secondary coverage in some cases. If you have questions about a specific situation, it’s best to check with your insurer.

Read the rest of our 5-part “Understanding Coverage” series:

Your Policy, Policy Declarations or Amended Declarations in effect on the date of loss is the primary source of reference for your coverage, coverage limits and deductible amounts.

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