What car insurance does not cover

A personal auto policy covers sudden, accidental losses from driving and owning a car for personal use. It does not cover mechanical breakdowns, normal wear, belongings inside the car, most business driving, intentional damage, racing, excluded drivers, or losses above your limits. Some of those gaps can be closed with an add-on; others need a different kind of insurance entirely.

Every policy lists its exclusions in writing, and wording varies by company and state. The gaps below are the ones drivers run into most often.

The most common gaps at a glance

Breakdowns, wear and maintenance

Comprehensive and collision pay for damage from events: a crash, a storm, a theft. They do not pay when parts simply fail or wear out. A seized engine, worn brakes, a dead hybrid battery, rust and tire wear are maintenance costs. Standard policy language also excludes road damage to tires on its own; a tire ruined by a pothole is your expense unless it is part of a larger covered loss.

The exception is damage caused by a covered event. If a flood ruins the engine, that is a comprehensive claim. If you hit debris and crack the oil pan, that is usually collision.

What's inside the car

Your auto policy covers the car and equipment permanently installed in it. A laptop, golf clubs or tools stolen from the car are covered, if at all, under homeowners or renters insurance, subject to that policy's deductible. The broken window from the break-in is a comprehensive claim.

Using your car for work

Personal auto policies are priced for personal driving, commuting and, sometimes, occasional work errands. Most exclude or restrict coverage when you carry people or goods for a fee:

• Rideshare. Your personal policy typically does not cover you while the app is on and you are waiting for a ride request; the transportation company's coverage at that stage is limited. A rideshare endorsement fills that gap. See Rideshare insurance for Uber and Lyft drivers.
• Delivery. Food, grocery and package delivery are commonly excluded under personal policies. See car insurance for delivery drivers.
• Business vehicles and heavy business use. Contractors hauling tools and equipment, or anyone whose car is titled to a business, may need commercial auto insurance.

Tell your insurer how you use the car. A claim denied for undisclosed business use is one of the most expensive surprises in auto insurance.

Coverages you did not buy

Many drivers assume a policy covers more than it does because they never looked at what they selected. A liability-only policy pays for damage and injuries you cause to others. It pays nothing for your car and nothing for your own injuries. Check your declarations page to see whether you have:

• Collision and comprehensive for your car
• Uninsured and underinsured motorist coverage for when the other driver cannot pay
• PIP or MedPay for your own medical bills
• Rental reimbursement and towing, which are separate add-ons

See how to read your car insurance declarations page for a line-by-line guide.

Losses above your limits

Every coverage stops at its limit. If you cause a crash that injures someone with $200,000 in damages and your bodily injury limit is $50,000 per person, the injured person can pursue you for the difference. Your insurer pays its limit and defends you, but the rest can become a judgment against you. For drivers with savings or a home, higher liability limits and an umbrella policy are the fix; see how much liability coverage do you need?.

Physical damage coverage has a ceiling too: the car's actual cash value. If you owe more on a loan than the car is worth, the payout will not clear the loan. That is what gap insurance is for.

People your policy does not cover

• Excluded drivers. If a household member was excluded by name, typically to lower the premium, the policy will not pay when that person drives. Rules on exclusions vary by state.
• Regular drivers you did not list. Insurers expect household members and regular users to be disclosed. An unlisted regular driver can lead to a denied claim or a rescinded policy.
• People without permission. Someone who takes your car without consent is generally not covered as a permissive user.

See who is covered on your car insurance policy for the details.

Custom equipment and modifications

Policies include only a small allowance for aftermarket parts, if any. Custom wheels, lift kits, wraps, upgraded audio and performance parts may need a separate endorsement and declared values.

Driving outside the U.S.

U.S. personal auto policies generally apply in the United States, its territories and Canada. Mexico is different: Mexican authorities require liability coverage from an insurer licensed in Mexico, so you need a separate Mexican policy for the trip. Some U.S. insurers extend limited physical damage coverage a short distance into Mexico by endorsement. See Driving to Mexico or Canada: what your insurance covers.

Intentional acts, racing and crimes

Policies exclude damage you cause on purpose, use in organized racing or speed contests, and in many cases losses connected with certain crimes. Track days are a common trap for enthusiasts; specialty track insurance exists for that. Staging or exaggerating a claim is fraud.

A gap-closing checklist

1. Pull your declarations page and list every coverage, limit and deductible.
2. Confirm every licensed driver in your household is listed or deliberately excluded.
3. Tell your insurer if you drive for any app, deliver, or use the car for business.
4. Compare your liability limits with your net worth and income; consider an umbrella.
5. Check whether you owe more on the car than it is worth.
6. Ask whether your renters or homeowners policy covers belongings stolen from a car.
7. Before a trip to Mexico, buy a Mexican liability policy.
8. Use the How much car insurance do I need? to check your limits.

Key takeaways

• Auto insurance covers sudden, accidental losses, not breakdowns, wear or maintenance.
• Belongings in the car fall under homeowners or renters insurance.
• Rideshare, delivery and business use need an endorsement or a commercial policy.
• Liability-only policies pay nothing for your own car or injuries.
• Excluded drivers, unlisted regular drivers and trips into Mexico are common coverage gaps.