What are the main types of auto insurance coverage?

Five core pieces: liability for injuries and damage you cause others, collision for your car in a crash, comprehensive for theft and non-crash damage, uninsured/underinsured motorist for drivers with no or too little insurance, and medical payments or PIP for your own medical bills. Extras like rental reimbursement, roadside, and gap coverage bolt on top.

What does 100/300/100 mean on a car insurance policy?

It is the liability limit in thousands: up to $100,000 of bodily injury coverage per injured person, $300,000 per accident across all injured people, and $100,000 of property damage per accident. Anything above those numbers in a crash you cause comes out of your pocket.

Is state minimum car insurance enough?

Legally yes, financially almost never. Property damage minimums of $10,000 to $25,000 do not replace one new car, and bodily injury minimums can be exhausted by a single emergency room visit. A common floor is 100/300/100, raised further once you have meaningful assets or income.

When should I drop collision and comprehensive?

When the math stops working: compare the annual cost of both coverages plus your deductible against the car's actual cash value. If the car is worth $3,000 and the coverages cost $600 a year with a $500 deductible, you are paying $1,100 to protect $2,500 — most drivers bank the premium instead.

Does my auto insurance cover a rental car?

Usually yes for a personal rental in the U.S. — your liability, collision, and comprehensive typically extend to the rental, subject to the same deductibles and limits. It does not cover rental agency fees like loss of use or diminished value, which is the one gap the counter waiver actually closes.

Insurance

What Does Auto Insurance Cover? Liability, Collision, Comprehensive, and the Rest

An auto policy is five coverages stapled together. What each one pays for, how to read limits like 100/300/100, and why state minimums leave you exposed.

By FreeCalculators Editorial · Published 2026-04-22 · Updated 2026-08-21 · 4 min read · 936 words

An auto policy is not one coverage — it is five or six stapled together, each paying a different person for a different kind of loss. What auto insurance covers depends entirely on which of those pieces you bought, and the drivers who discover a missing piece after a crash are the ones who bought on price alone. Here is each coverage, what it actually pays, and how to read the numbers.

Liability: the coverage every state makes you buy

Liability pays the other people when you cause a crash — their medical bills under bodily injury (BI), their car and property under property damage (PD). It pays nothing to you. Limits are written as three numbers, and reading them is a core skill:

Decoding 100/300/100

                First number: $100,000 max bodily injury per person you injure
Second number: $300,000 max bodily injury per accident, all injured people
Third number: $100,000 max property damage per accident
You rear-end a car carrying three people, $120,000 in medical bills each
Policy pays $100,000 per person cap -> $300,000; you owe the remaining $60,000

Collision and comprehensive: coverage for your own car

Collision pays to repair or replace your car after a crash with another vehicle or object, regardless of fault, minus your deductible. Comprehensive pays for the non-crash losses — theft, hail, flood, fire, vandalism, falling trees, animal strikes. Both settle at the car's actual cash value, which is why they stop being worth buying as the car ages: when the car is worth $3,000 and the two coverages plus a $500 deductible cost $600 a year, you are insuring $2,500 of recoverable value.

Uninsured and underinsured motorist coverage

Roughly one in seven U.S. drivers carries no insurance, and many more carry only state minimums. Uninsured motorist (UM) pays your injuries when the at-fault driver has no policy; underinsured motorist (UIM) pays when their limit runs out before your bills do. Where it is optional, it is usually cheap — and it is the only coverage on the page that protects you from someone else's decision to skip insurance.

Medical payments and personal injury protection

Medical payments (MedPay) covers medical bills for you and your passengers after a crash, regardless of fault, typically $1,000 to $10,000. Personal injury protection (PIP) is the broader no-fault version required in a dozen states, adding lost wages and rehabilitation. If your health plan has a high deductible, PIP or MedPay fills the gap a crash would otherwise blow through it.

State minimums: legal, and nowhere near enough

Minimum liability requirements in four states — and what they actually buy
State	Minimum limits	What the PD limit covers	Gap risk
California	30/60/15 (raised in 2025)	A base-model sedan	Moderate
Texas	30/60/25	One average new car	Moderate
Florida	10,000 PIP + 10,000 PD	Half a new car	Severe - no BI required
New York	25/50/10	A used compact	High

The add-ons worth pricing

Rental reimbursement: $30 to $50 a day while your car is in the shop, usually $20 to $40 a year.
Roadside assistance: towing and lockouts, cheaper on the policy than most motor clubs.
Gap insurance: pays the difference between the car's ACV and your loan balance — essential in the first years of a long loan.
New car replacement: pays for a brand-new car rather than depreciated ACV if a recent-model car is totaled.

Frequently asked questions

What are the main types of auto insurance coverage?: Five core pieces: liability for injuries and damage you cause others, collision for your car in a crash, comprehensive for theft and non-crash damage, uninsured/underinsured motorist for drivers with no or too little insurance, and medical payments or PIP for your own medical bills. Extras like rental reimbursement, roadside, and gap coverage bolt on top.
What does 100/300/100 mean on a car insurance policy?: It is the liability limit in thousands: up to $100,000 of bodily injury coverage per injured person, $300,000 per accident across all injured people, and $100,000 of property damage per accident. Anything above those numbers in a crash you cause comes out of your pocket.
Is state minimum car insurance enough?: Legally yes, financially almost never. Property damage minimums of $10,000 to $25,000 do not replace one new car, and bodily injury minimums can be exhausted by a single emergency room visit. A common floor is 100/300/100, raised further once you have meaningful assets or income.
When should I drop collision and comprehensive?: When the math stops working: compare the annual cost of both coverages plus your deductible against the car's actual cash value. If the car is worth $3,000 and the coverages cost $600 a year with a $500 deductible, you are paying $1,100 to protect $2,500 — most drivers bank the premium instead.
Does my auto insurance cover a rental car?: Usually yes for a personal rental in the U.S. — your liability, collision, and comprehensive typically extend to the rental, subject to the same deductibles and limits. It does not cover rental agency fees like loss of use or diminished value, which is the one gap the counter waiver actually closes.

Calculators in this guide

Car Insurance Cost Calculator
Calculate your car insurance premium easily. Input your details like age and vehicle value to get an estimate tailored to your situation.
Car Insurance Savings Calculator
See what each car insurance discount is actually worth on your premium — bundling, telematics, a higher deductible, dropping collision, and re-shopping.
Insurance Deductible Calculator
Calculate whether a higher deductible is worth the premium savings. Understand break-even years and expected costs to make informed insurance decisions.
Motorcycle Insurance Calculator
Estimate motorcycle insurance cost from bike value, engine size, rider age and experience, split across liability, collision and comprehensive.